129979570 has 32 divisors (see below), whose sum is σ = 281462400. Its totient is φ = 42218496.

The previous prime is 129979567. The next prime is 129979573. The reversal of 129979570 is 75979921.

It is an interprime number because it is at equal distance from previous prime (129979567) and next prime (129979573).

It is not an unprimeable number, because it can be changed into a prime (129979573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47535 + ... + 50194.

It is an arithmetic number, because the mean of its divisors is an integer number (8795700).

Almost surely, 2^129979570 is an apocalyptic number.

129979570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129979570 is an abundant number, since it is smaller than the sum of its proper divisors (151482830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129979570 is a wasteful number, since it uses less digits than its factorization.

129979570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97762.

The product of its (nonzero) digits is 357210, while the sum is 49.

The square root of 129979570 is about 11400.8583010228. The cubic root of 129979570 is about 506.5531635370.

The spelling of 129979570 in words is "one hundred twenty-nine million, nine hundred seventy-nine thousand, five hundred seventy".