630953444 has 48 divisors (see below), whose sum is σ = 1270893120. Its totient is φ = 271071360.

The previous prime is 630953443. The next prime is 630953497. The reversal of 630953444 is 444359036.

It is a happy number.

It is a super-2 number, since 2×630953444² = 796204496990922272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 630953398 and 630953407.

It is not an unprimeable number, because it can be changed into a prime (630953443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632354 + ... + 633350.

It is an arithmetic number, because the mean of its divisors is an integer number (26476940).

Almost surely, 2^630953444 is an apocalyptic number.

It is an amenable number.

630953444 is an abundant number, since it is smaller than the sum of its proper divisors (639939676).

630953444 is a wasteful number, since it uses less digits than its factorization.

630953444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 630953444 is about 25118.7866745191. The cubic root of 630953444 is about 857.6941312064.

The spelling of 630953444 in words is "six hundred thirty million, nine hundred fifty-three thousand, four hundred forty-four".