79471894 has 4 divisors (see below), whose sum is σ = 119207844. Its totient is φ = 39735946.

The previous prime is 79471891. The next prime is 79471907. The reversal of 79471894 is 49817497.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79471891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19867972 + ... + 19867975.

It is an arithmetic number, because the mean of its divisors is an integer number (29801961).

Almost surely, 2^79471894 is an apocalyptic number.

79471894 is a deficient number, since it is larger than the sum of its proper divisors (39735950).

79471894 is a wasteful number, since it uses less digits than its factorization.

79471894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39735949.

The product of its digits is 508032, while the sum is 49.

The square root of 79471894 is about 8914.7010045206. The cubic root of 79471894 is about 429.9367024189.

The spelling of 79471894 in words is "seventy-nine million, four hundred seventy-one thousand, eight hundred ninety-four".