79703957 has 4 divisors (see below), whose sum is σ = 81858156. Its totient is φ = 77549760.

The previous prime is 79703929. The next prime is 79703971. The reversal of 79703957 is 75930797.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73119601 + 6584356 = 8551^2 + 2566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79703957 is a prime.

It is a super-2 number, since 2×79703957² = 12705441522915698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79703927) 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, 1077044 + ... + 1077117.

It is an arithmetic number, because the mean of its divisors is an integer number (20464539).

Almost surely, 2^79703957 is an apocalyptic number.

It is an amenable number.

79703957 is a deficient number, since it is larger than the sum of its proper divisors (2154199).

79703957 is a wasteful number, since it uses less digits than its factorization.

79703957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154198.

The product of its (nonzero) digits is 416745, while the sum is 47.

The square root of 79703957 is about 8927.7072644661. The cubic root of 79703957 is about 430.3547766137.

The spelling of 79703957 in words is "seventy-nine million, seven hundred three thousand, nine hundred fifty-seven".