79813438 has 8 divisors (see below), whose sum is σ = 119885688. Its totient is φ = 39851544.

The previous prime is 79813411. The next prime is 79813441. The reversal of 79813438 is 83431897.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 79813394 and 79813403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25756 + ... + 28687.

It is an arithmetic number, because the mean of its divisors is an integer number (14985711).

Almost surely, 2^79813438 is an apocalyptic number.

79813438 is a deficient number, since it is larger than the sum of its proper divisors (40072250).

79813438 is a wasteful number, since it uses less digits than its factorization.

79813438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55178.

The product of its digits is 145152, while the sum is 43.

The square root of 79813438 is about 8933.8366897991. The cubic root of 79813438 is about 430.5517309302.

The spelling of 79813438 in words is "seventy-nine million, eight hundred thirteen thousand, four hundred thirty-eight".