79401405 has 16 divisors (see below), whose sum is σ = 132566400. Its totient is φ = 40506048.

The previous prime is 79401403. The next prime is 79401409. The reversal of 79401405 is 50410497.

It is a happy number.

It is not a de Polignac number, because 79401405 - 2¹ = 79401403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79401401) 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, 114730 + ... + 115419.

It is an arithmetic number, because the mean of its divisors is an integer number (8285400).

Almost surely, 2^79401405 is an apocalyptic number.

It is an amenable number.

79401405 is a deficient number, since it is larger than the sum of its proper divisors (53164995).

79401405 is a wasteful number, since it uses less digits than its factorization.

79401405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230180.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 79401405 is about 8910.7466017164. The cubic root of 79401405 is about 429.8095515013.

The spelling of 79401405 in words is "seventy-nine million, four hundred one thousand, four hundred five".