129990327 has 8 divisors (see below), whose sum is σ = 173378160. Its totient is φ = 86631360.

The previous prime is 129990317. The next prime is 129990331. The reversal of 129990327 is 723099921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129990327 - 2⁷ = 129990199 is a prime.

It is a super-2 number, since 2×129990327² = 33794970227133858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129990307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7699 + ... + 17867.

It is an arithmetic number, because the mean of its divisors is an integer number (21672270).

Almost surely, 2^129990327 is an apocalyptic number.

129990327 is a deficient number, since it is larger than the sum of its proper divisors (43387833).

129990327 is a wasteful number, since it uses less digits than its factorization.

129990327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14433.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 129990327 is about 11401.3300539893. The cubic root of 129990327 is about 506.5671371229.

The spelling of 129990327 in words is "one hundred twenty-nine million, nine hundred ninety thousand, three hundred twenty-seven".