629139906 has 16 divisors (see below), whose sum is σ = 1398088800. Its totient is φ = 209713284.

The previous prime is 629139887. The next prime is 629139911. The reversal of 629139906 is 609931926.

It is a happy number.

629139906 is a `hidden beast` number, since 629 + 13 + 9 + 9 + 0 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5825316 + ... + 5825423.

It is an arithmetic number, because the mean of its divisors is an integer number (87380550).

Almost surely, 2^629139906 is an apocalyptic number.

629139906 is an abundant number, since it is smaller than the sum of its proper divisors (768948894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

629139906 is a wasteful number, since it uses less digits than its factorization.

629139906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11650750 (or 11650744 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 629139906 is about 25082.6614616551. The cubic root of 629139906 is about 856.8715910881.

The spelling of 629139906 in words is "six hundred twenty-nine million, one hundred thirty-nine thousand, nine hundred six".