129790319 has 4 divisors (see below), whose sum is σ = 130061760. Its totient is φ = 129518880.

The previous prime is 129790313. The next prime is 129790361. The reversal of 129790319 is 913097921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129790319 - 2¹⁶ = 129724783 is a prime.

It is a super-2 number, since 2×129790319² = 33691053812243522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129790313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135002 + ... + 135959.

It is an arithmetic number, because the mean of its divisors is an integer number (32515440).

Almost surely, 2^129790319 is an apocalyptic number.

129790319 is a deficient number, since it is larger than the sum of its proper divisors (271441).

129790319 is an equidigital number, since it uses as much as digits as its factorization.

129790319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271440.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 129790319 is about 11392.5554200978. Note that the first 3 decimals coincide. The cubic root of 129790319 is about 506.3071960171.

The spelling of 129790319 in words is "one hundred twenty-nine million, seven hundred ninety thousand, three hundred nineteen".