129579460 has 12 divisors (see below), whose sum is σ = 272116908. Its totient is φ = 51831776.

The previous prime is 129579431. The next prime is 129579467. The reversal of 129579460 is 64975921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54375876 + 75203584 = 7374^2 + 8672^2 .

It is not an unprimeable number, because it can be changed into a prime (129579467) 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, 3239467 + ... + 3239506.

It is an arithmetic number, because the mean of its divisors is an integer number (22676409).

Almost surely, 2^129579460 is an apocalyptic number.

129579460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129579460 is an abundant number, since it is smaller than the sum of its proper divisors (142537448).

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

129579460 is a wasteful number, since it uses less digits than its factorization.

129579460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478982 (or 6478980 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 129579460 is about 11383.2974133157. The cubic root of 129579460 is about 506.0328630356.

The spelling of 129579460 in words is "one hundred twenty-nine million, five hundred seventy-nine thousand, four hundred sixty".