78579249 has 16 divisors (see below), whose sum is σ = 119927808. Its totient is φ = 44831952.

The previous prime is 78579211. The next prime is 78579251. The reversal of 78579249 is 94297587.

It is not a de Polignac number, because 78579249 - 2⁸ = 78578993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78575249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12694 + ... + 17840.

It is an arithmetic number, because the mean of its divisors is an integer number (7495488).

Almost surely, 2^78579249 is an apocalyptic number.

It is an amenable number.

78579249 is a deficient number, since it is larger than the sum of its proper divisors (41348559).

78579249 is a wasteful number, since it uses less digits than its factorization.

78579249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884.

The product of its digits is 1270080, while the sum is 51.

The square root of 78579249 is about 8864.4937249682. The cubic root of 78579249 is about 428.3209245431.

The spelling of 78579249 in words is "seventy-eight million, five hundred seventy-nine thousand, two hundred forty-nine".