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130939379 = 294515151
BaseRepresentation
bin1111100110111…
…11100111110011
3100010101102001122
413303133213303
5232010030004
620554252455
73146652314
oct763374763
9303342048
10130939379
1167a0376a
1237a2712b
132118722c
141356660b
15b766cbe
hex7cdf9f3

130939379 has 4 divisors (see below), whose sum is σ = 135454560. Its totient is φ = 126424200.

The previous prime is 130939331. The next prime is 130939433. The reversal of 130939379 is 973939031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130939379 - 212 = 130935283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130939079) 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, 2257547 + ... + 2257604.

It is an arithmetic number, because the mean of its divisors is an integer number (33863640).

Almost surely, 2130939379 is an apocalyptic number.

130939379 is a deficient number, since it is larger than the sum of its proper divisors (4515181).

130939379 is an equidigital number, since it uses as much as digits as its factorization.

130939379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515180.

The product of its (nonzero) digits is 137781, while the sum is 44.

The square root of 130939379 is about 11442.8745951356. The cubic root of 130939379 is about 507.7969549905.

The spelling of 130939379 in words is "one hundred thirty million, nine hundred thirty-nine thousand, three hundred seventy-nine".

Divisors: 1 29 4515151 130939379