79940245 has 32 divisors (see below), whose sum is σ = 120994560. Its totient is φ = 49251840.

The previous prime is 79940243. The next prime is 79940251. The reversal of 79940245 is 54204997.

It is not a de Polignac number, because 79940245 - 2¹ = 79940243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79940198 and 79940207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79940243) 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 31 ways as a sum of consecutive naturals, for example, 33099 + ... + 35431.

It is an arithmetic number, because the mean of its divisors is an integer number (3781080).

Almost surely, 2^79940245 is an apocalyptic number.

It is an amenable number.

79940245 is a deficient number, since it is larger than the sum of its proper divisors (41054315).

79940245 is a wasteful number, since it uses less digits than its factorization.

79940245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 79940245 is about 8940.9308799476. The cubic root of 79940245 is about 430.7796294136.

The spelling of 79940245 in words is "seventy-nine million, nine hundred forty thousand, two hundred forty-five".