129940698 has 16 divisors (see below), whose sum is σ = 260715456. Its totient is φ = 43174560.

The previous prime is 129940697. The next prime is 129940703. The reversal of 129940698 is 896049921.

It is not an unprimeable number, because it can be changed into a prime (129940691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32718 + ... + 36473.

It is an arithmetic number, because the mean of its divisors is an integer number (16294716).

Almost surely, 2^129940698 is an apocalyptic number.

129940698 is an abundant number, since it is smaller than the sum of its proper divisors (130774758).

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

129940698 is a wasteful number, since it uses less digits than its factorization.

129940698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69509.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 129940698 is about 11399.1533896163. The cubic root of 129940698 is about 506.5026615034.

The spelling of 129940698 in words is "one hundred twenty-nine million, nine hundred forty thousand, six hundred ninety-eight".