630189399 has 32 divisors (see below), whose sum is σ = 982333440. Its totient is φ = 351936000.

The previous prime is 630189389. The next prime is 630189403. The reversal of 630189399 is 993981036.

It is a happy number.

It is not a de Polignac number, because 630189399 - 2⁷ = 630189271 is a prime.

It is a super-2 number, since 2×630189399² = 794277357223962402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630189389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165679 + ... + 169439.

It is an arithmetic number, because the mean of its divisors is an integer number (30697920).

Almost surely, 2^630189399 is an apocalyptic number.

630189399 is a deficient number, since it is larger than the sum of its proper divisors (352144041).

630189399 is a wasteful number, since it uses less digits than its factorization.

630189399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 630189399 is about 25103.5734308883. The cubic root of 630189399 is about 857.3477867903.

The spelling of 630189399 in words is "six hundred thirty million, one hundred eighty-nine thousand, three hundred ninety-nine".