422631945 has 64 divisors (see below), whose sum is σ = 777242880. Its totient is φ = 217728000.

The previous prime is 422631941. The next prime is 422631947. The reversal of 422631945 is 549136224.

It is a happy number.

It is not a de Polignac number, because 422631945 - 2² = 422631941 is a prime.

It is a super-5 number, since 5×422631945⁵ (a number of 44 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (422631941) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1053745 + ... + 1054145.

It is an arithmetic number, because the mean of its divisors is an integer number (12144420).

Almost surely, 2^422631945 is an apocalyptic number.

422631945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422631945 is a deficient number, since it is larger than the sum of its proper divisors (354610935).

422631945 is a wasteful number, since it uses less digits than its factorization.

422631945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 657 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 422631945 is about 20558.0141307472. The cubic root of 422631945 is about 750.4482919923.

The spelling of 422631945 in words is "four hundred twenty-two million, six hundred thirty-one thousand, nine hundred forty-five".