79854993 has 12 divisors (see below), whose sum is σ = 115451908. Its totient is φ = 53187840.

The previous prime is 79854989. The next prime is 79854997. The reversal of 79854993 is 39945897.

79854993 is a `hidden beast` number, since 7 + 9 + 8 + 549 + 93 = 666.

It is an interprime number because it is at equal distance from previous prime (79854989) and next prime (79854997).

It can be written as a sum of positive squares in 2 ways, for example, as 73564929 + 6290064 = 8577^2 + 2508^2 .

It is not a de Polignac number, because 79854993 - 2² = 79854989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79854997) 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 in 11 ways as a sum of consecutive naturals, for example, 8253 + ... + 15093.

Almost surely, 2^79854993 is an apocalyptic number.

It is an amenable number.

79854993 is a deficient number, since it is larger than the sum of its proper divisors (35596915).

79854993 is a wasteful number, since it uses less digits than its factorization.

79854993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8144 (or 8141 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 79854993 is about 8936.1620956650. The cubic root of 79854993 is about 430.6264404588.

The spelling of 79854993 in words is "seventy-nine million, eight hundred fifty-four thousand, nine hundred ninety-three".