307285074889 has 9 divisors (see below), whose sum is σ = 332748446709. Its totient is φ = 283641109440.

The previous prime is 307285074857. The next prime is 307285074893. The reversal of 307285074889 is 988470582703.

The square root of 307285074889 is 554333.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 18172388025 + 289112686864 = 134805^2 + 537692^2 .

It is not a de Polignac number, because 307285074889 - 2⁵ = 307285074857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307285074809) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7185009 + ... + 7227649.

Almost surely, 2^307285074889 is an apocalyptic number.

307285074889 is the 554333-rd square number.

307285074889 is the 277167-th centered octagonal number.

It is an amenable number.

307285074889 is a deficient number, since it is larger than the sum of its proper divisors (25463371820).

307285074889 is an frugal number, since it uses more digits than its factorization.

307285074889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85308 (or 42654 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 307285074889 in words is "three hundred seven billion, two hundred eighty-five million, seventy-four thousand, eight hundred eighty-nine".