79254409 has 12 divisors (see below), whose sum is σ = 86180556. Its totient is φ = 72850752.

The previous prime is 79254317. The next prime is 79254437. The reversal of 79254409 is 90445297.

It can be written as a sum of positive squares in 6 ways, for example, as 27457600 + 51796809 = 5240^2 + 7197^2 .

It is not a de Polignac number, because 79254409 - 2⁷ = 79254281 is a prime.

It is a super-2 number, since 2×79254409² = 12562522691878562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79254509) 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, 45967 + ... + 47659.

It is an arithmetic number, because the mean of its divisors is an integer number (7181713).

Almost surely, 2^79254409 is an apocalyptic number.

It is an amenable number.

79254409 is a deficient number, since it is larger than the sum of its proper divisors (6926147).

79254409 is a wasteful number, since it uses less digits than its factorization.

79254409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1983 counting only the distinct ones).

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

The square root of 79254409 is about 8902.4945380494. The cubic root of 79254409 is about 429.5441518585.

The spelling of 79254409 in words is "seventy-nine million, two hundred fifty-four thousand, four hundred nine".