629131393 has 12 divisors (see below), whose sum is σ = 732204900. Its totient is φ = 538292480.

The previous prime is 629131381. The next prime is 629131403. The reversal of 629131393 is 393131926.

629131393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 284360769 + 344770624 = 16863^2 + 18568^2 .

It is a de Polignac number, because none of the positive numbers 2^k-629131393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (629131343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150868 + ... + 154981.

It is an arithmetic number, because the mean of its divisors is an integer number (61017075).

Almost surely, 2^629131393 is an apocalyptic number.

It is an amenable number.

629131393 is a deficient number, since it is larger than the sum of its proper divisors (103073507).

629131393 is a wasteful number, since it uses less digits than its factorization.

629131393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305888 (or 305877 counting only the distinct ones).

The product of its digits is 26244, while the sum is 37.

The square root of 629131393 is about 25082.4917621834. The cubic root of 629131393 is about 856.8677262452.

The spelling of 629131393 in words is "six hundred twenty-nine million, one hundred thirty-one thousand, three hundred ninety-three".