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1979314829 = 2119380639
BaseRepresentation
bin111010111111001…
…1111001010001101
312002221102121111122
41311332133022031
513023201033304
6524223330325
7100022620112
oct16576371215
95087377448
101979314829
119262a9588
12472a509a5
132570b410b
1414ac32909
15b8b789be
hex75f9f28d

1979314829 has 4 divisors (see below), whose sum is σ = 1988695680. Its totient is φ = 1969933980.

The previous prime is 1979314823. The next prime is 1979314837. The reversal of 1979314829 is 9284139791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9284139791 = 9719561421.

It is not a de Polignac number, because 1979314829 - 212 = 1979310733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979314823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4690109 + ... + 4690530.

It is an arithmetic number, because the mean of its divisors is an integer number (497173920).

Almost surely, 21979314829 is an apocalyptic number.

It is an amenable number.

1979314829 is a deficient number, since it is larger than the sum of its proper divisors (9380851).

1979314829 is an equidigital number, since it uses as much as digits as its factorization.

1979314829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9380850.

The product of its digits is 979776, while the sum is 53.

The square root of 1979314829 is about 44489.4912198375. The cubic root of 1979314829 is about 1255.5623747947.

The spelling of 1979314829 in words is "one billion, nine hundred seventy-nine million, three hundred fourteen thousand, eight hundred twenty-nine".

Divisors: 1 211 9380639 1979314829