129530390 has 16 divisors (see below), whose sum is σ = 254350800. Its totient is φ = 47101920.

The previous prime is 129530383. The next prime is 129530399. The reversal of 129530390 is 93035921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129530399) 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, 588665 + ... + 588884.

It is an arithmetic number, because the mean of its divisors is an integer number (15896925).

Almost surely, 2^129530390 is an apocalyptic number.

129530390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129530390 is a deficient number, since it is larger than the sum of its proper divisors (124820410).

129530390 is a wasteful number, since it uses less digits than its factorization.

129530390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177567.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 129530390 is about 11381.1418583550. The cubic root of 129530390 is about 505.9689790228.

The spelling of 129530390 in words is "one hundred twenty-nine million, five hundred thirty thousand, three hundred ninety".