129814644 has 24 divisors (see below), whose sum is σ = 307423648. Its totient is φ = 42625440.

The previous prime is 129814613. The next prime is 129814673. The reversal of 129814644 is 446418921.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 79927 + ... + 81534.

Almost surely, 2^129814644 is an apocalyptic number.

It is an amenable number.

129814644 is an abundant number, since it is smaller than the sum of its proper divisors (177609004).

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

129814644 is a wasteful number, since it uses less digits than its factorization.

129814644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161535 (or 161533 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 129814644 is about 11393.6229532138. The cubic root of 129814644 is about 506.3388243473.

The spelling of 129814644 in words is "one hundred twenty-nine million, eight hundred fourteen thousand, six hundred forty-four".