129361407 has 16 divisors (see below), whose sum is σ = 205693440. Its totient is φ = 70706592.

The previous prime is 129361399. The next prime is 129361423. The reversal of 129361407 is 704163921.

It is not a de Polignac number, because 129361407 - 2³ = 129361399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129361457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133432 + ... + 134397.

It is an arithmetic number, because the mean of its divisors is an integer number (12855840).

Almost surely, 2^129361407 is an apocalyptic number.

129361407 is a deficient number, since it is larger than the sum of its proper divisors (76332033).

129361407 is a wasteful number, since it uses less digits than its factorization.

129361407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267862.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 129361407 is about 11373.7156197964. The cubic root of 129361407 is about 505.7488572851.

The spelling of 129361407 in words is "one hundred twenty-nine million, three hundred sixty-one thousand, four hundred seven".