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29914123849 = 19291032
BaseRepresentation
bin11011110111000001…
…010100111001001001
32212012202200221102221
4123313001110321021
5442231003430344
621424203254041
72106204600031
oct336701247111
985182627387
1029914123849
111176081a005
12596a21a321
132a896581cc
14163ac928c1
15ba1314184
hex6f7054e49

29914123849 has 9 divisors (see below), whose sum is σ = 31574884653. Its totient is φ = 28336583052.

The previous prime is 29914123807. The next prime is 29914123907. The reversal of 29914123849 is 94832141992.

The square root of 29914123849 is 172957.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 29914123849 - 27 = 29914123721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29914123796 and 29914123805.

It is not an unprimeable number, because it can be changed into a prime (29914123549) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3281632 + ... + 3290734.

It is an arithmetic number, because the mean of its divisors is an integer number (3508320517).

Almost surely, 229914123849 is an apocalyptic number.

29914123849 is the 172957-th square number.

29914123849 is the 86479-th centered octagonal number.

It is an amenable number.

29914123849 is a deficient number, since it is larger than the sum of its proper divisors (1660760804).

29914123849 is an frugal number, since it uses more digits than its factorization.

29914123849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18244 (or 9122 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The spelling of 29914123849 in words is "twenty-nine billion, nine hundred fourteen million, one hundred twenty-three thousand, eight hundred forty-nine".

Divisors: 1 19 361 9103 172957 3286183 82864609 1574427571 29914123849