432956981 has 4 divisors (see below), whose sum is σ = 443025792. Its totient is φ = 422888172.

The previous prime is 432956963. The next prime is 432956987. The reversal of 432956981 is 189659234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 189659234 = 2 ⋅94829617.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-432956981 is a prime.

It is a super-2 number, since 2×432956981² = 374903494793268722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432956987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5034341 + ... + 5034426.

It is an arithmetic number, because the mean of its divisors is an integer number (110756448).

Almost surely, 2^432956981 is an apocalyptic number.

It is an amenable number.

432956981 is a deficient number, since it is larger than the sum of its proper divisors (10068811).

432956981 is a wasteful number, since it uses less digits than its factorization.

432956981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10068810.

The product of its digits is 466560, while the sum is 47.

The square root of 432956981 is about 20807.6183404060. The cubic root of 432956981 is about 756.5104221974.

The spelling of 432956981 in words is "four hundred thirty-two million, nine hundred fifty-six thousand, nine hundred eighty-one".