129639190 has 16 divisors (see below), whose sum is σ = 234373680. Its totient is φ = 51628320.

The previous prime is 129639151. The next prime is 129639217. The reversal of 129639190 is 91936921.

It is a super-2 number, since 2×129639190² = 33612639167712200, which contains 22 as substring.

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, 26016 + ... + 30595.

It is an arithmetic number, because the mean of its divisors is an integer number (14648355).

Almost surely, 2^129639190 is an apocalyptic number.

129639190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129639190 is a deficient number, since it is larger than the sum of its proper divisors (104734490).

129639190 is a wasteful number, since it uses less digits than its factorization.

129639190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56847.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 129639190 is about 11385.9206918018. The cubic root of 129639190 is about 506.1106034942.

The spelling of 129639190 in words is "one hundred twenty-nine million, six hundred thirty-nine thousand, one hundred ninety".