129089406 has 16 divisors (see below), whose sum is σ = 258482448. Its totient is φ = 42979200.

The previous prime is 129089377. The next prime is 129089407. The reversal of 129089406 is 604980921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129089407) 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, 6925 + ... + 17496.

It is an arithmetic number, because the mean of its divisors is an integer number (16155153).

Almost surely, 2^129089406 is an apocalyptic number.

129089406 is an abundant number, since it is smaller than the sum of its proper divisors (129393042).

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

129089406 is a wasteful number, since it uses less digits than its factorization.

129089406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25307.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 129089406 is about 11361.7518895635. The cubic root of 129089406 is about 505.3941386018.

The spelling of 129089406 in words is "one hundred twenty-nine million, eighty-nine thousand, four hundred six".