79881351 has 16 divisors (see below), whose sum is σ = 123026688. Its totient is φ = 45564800.

The previous prime is 79881337. The next prime is 79881359. The reversal of 79881351 is 15318897.

79881351 = 1895² + 1896² + ... + 1916².

It is a cyclic number.

It is not a de Polignac number, because 79881351 - 2⁹ = 79880839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79881359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70635 + ... + 71756.

It is an arithmetic number, because the mean of its divisors is an integer number (7689168).

Almost surely, 2^79881351 is an apocalyptic number.

79881351 is a deficient number, since it is larger than the sum of its proper divisors (43145337).

79881351 is a wasteful number, since it uses less digits than its factorization.

79881351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142422.

The product of its digits is 60480, while the sum is 42.

The square root of 79881351 is about 8937.6367681843. The cubic root of 79881351 is about 430.6738146751.

It can be divided in two parts, 7988 and 1351, that added together give a palindrome (9339).

The spelling of 79881351 in words is "seventy-nine million, eight hundred eighty-one thousand, three hundred fifty-one".