309454072389 has 48 divisors (see below), whose sum is σ = 557366209920. Its totient is φ = 160732010880.

The previous prime is 309454072357. The next prime is 309454072391. The reversal of 309454072389 is 983270454903.

309454072389 is a `hidden beast` number, since 3 + 0 + 94 + 540 + 7 + 2 + 3 + 8 + 9 = 666.

It is not a de Polignac number, because 309454072389 - 2⁵ = 309454072357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309454072489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5396979 + ... + 5454015.

It is an arithmetic number, because the mean of its divisors is an integer number (11611796040).

Almost surely, 2^309454072389 is an apocalyptic number.

It is an amenable number.

309454072389 is a deficient number, since it is larger than the sum of its proper divisors (247912137531).

309454072389 is a wasteful number, since it uses less digits than its factorization.

309454072389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64890 (or 64887 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 309454072389 in words is "three hundred nine billion, four hundred fifty-four million, seventy-two thousand, three hundred eighty-nine".