945566939 has 6 divisors (see below), whose sum is σ = 997953300. Its totient is φ = 895799916.

The previous prime is 945566873. The next prime is 945566957. The reversal of 945566939 is 939665549.

It is a de Polignac number, because none of the positive numbers 2^k-945566939 is a prime.

It is a super-2 number, since 2×945566939² = 1788193672259659442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945166939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1309289 + ... + 1310010.

It is an arithmetic number, because the mean of its divisors is an integer number (166325550).

Almost surely, 2^945566939 is an apocalyptic number.

945566939 is a deficient number, since it is larger than the sum of its proper divisors (52386361).

945566939 is a wasteful number, since it uses less digits than its factorization.

945566939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619337 (or 2619318 counting only the distinct ones).

The product of its digits is 7873200, while the sum is 56.

The square root of 945566939 is about 30750.0721787771. The cubic root of 945566939 is about 981.5160966891.

The spelling of 945566939 in words is "nine hundred forty-five million, five hundred sixty-six thousand, nine hundred thirty-nine".