129790690 has 8 divisors (see below), whose sum is σ = 233623260. Its totient is φ = 51916272.

The previous prime is 129790667. The next prime is 129790711. The reversal of 129790690 is 96097921.

It can be written as a sum of positive squares in 2 ways, for example, as 118788201 + 11002489 = 10899^2 + 3317^2 .

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

It is a super-2 number, since 2×129790690² = 33691246421352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6489525 + ... + 6489544.

Almost surely, 2^129790690 is an apocalyptic number.

129790690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129790690 is a deficient number, since it is larger than the sum of its proper divisors (103832570).

129790690 is a wasteful number, since it uses less digits than its factorization.

129790690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12979076.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 129790690 is about 11392.5717026491. The cubic root of 129790690 is about 506.3076784357.

The spelling of 129790690 in words is "one hundred twenty-nine million, seven hundred ninety thousand, six hundred ninety".