79401599 has 4 divisors (see below), whose sum is σ = 79464960. Its totient is φ = 79338240.

The previous prime is 79401587. The next prime is 79401601. The reversal of 79401599 is 99510497.

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 79401599 - 2¹² = 79397503 is a prime.

It is a super-2 number, since 2×79401599² = 12609227847513602, which contains 22 as substring.

It is a Duffinian number.

79401599 is a Rhonda number in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79401529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29762 + ... + 32319.

It is an arithmetic number, because the mean of its divisors is an integer number (19866240).

Almost surely, 2^79401599 is an apocalyptic number.

79401599 is a deficient number, since it is larger than the sum of its proper divisors (63361).

79401599 is a wasteful number, since it uses less digits than its factorization.

79401599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63360.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 79401599 is about 8910.7574874418. The cubic root of 79401599 is about 429.8099015497.

The spelling of 79401599 in words is "seventy-nine million, four hundred one thousand, five hundred ninety-nine".