845609079 has 32 divisors (see below), whose sum is σ = 1359086080. Its totient is φ = 456855552.

The previous prime is 845609027. The next prime is 845609081. The reversal of 845609079 is 970906548.

It is not a de Polignac number, because 845609079 - 2²⁵ = 812054647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845609179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228387 + ... + 232059.

It is an arithmetic number, because the mean of its divisors is an integer number (42471440).

Almost surely, 2^845609079 is an apocalyptic number.

845609079 is a deficient number, since it is larger than the sum of its proper divisors (513477001).

845609079 is a wasteful number, since it uses less digits than its factorization.

845609079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 845609079 is about 29079.3582975966. The cubic root of 845609079 is about 945.6342909972.

It can be divided in two parts, 84560 and 9079, that added together give a palindrome (93639).

The spelling of 845609079 in words is "eight hundred forty-five million, six hundred nine thousand, seventy-nine".