79938854 has 4 divisors (see below), whose sum is σ = 119908284. Its totient is φ = 39969426.

The previous prime is 79938851. The next prime is 79938883. The reversal of 79938854 is 45883997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45883997 = 101 ⋅454297.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 79938796 and 79938805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79938851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19984712 + ... + 19984715.

It is an arithmetic number, because the mean of its divisors is an integer number (29977071).

Almost surely, 2^79938854 is an apocalyptic number.

79938854 is a deficient number, since it is larger than the sum of its proper divisors (39969430).

79938854 is a wasteful number, since it uses less digits than its factorization.

79938854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39969429.

The product of its digits is 2177280, while the sum is 53.

The square root of 79938854 is about 8940.8530912883. The cubic root of 79938854 is about 430.7771308059. Note that the first 3 decimals are identical.

The spelling of 79938854 in words is "seventy-nine million, nine hundred thirty-eight thousand, eight hundred fifty-four".