129940577 has 16 divisors (see below), whose sum is σ = 144039168. Its totient is φ = 116475840.

The previous prime is 129940523. The next prime is 129940583. The reversal of 129940577 is 775049921.

It is not a de Polignac number, because 129940577 - 2¹² = 129936481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129940507) 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, 70052 + ... + 71882.

It is an arithmetic number, because the mean of its divisors is an integer number (9002448).

Almost surely, 2^129940577 is an apocalyptic number.

It is an amenable number.

129940577 is a deficient number, since it is larger than the sum of its proper divisors (14098591).

129940577 is a wasteful number, since it uses less digits than its factorization.

129940577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 129940577 is about 11399.1480822033. The cubic root of 129940577 is about 506.5025042860.

The spelling of 129940577 in words is "one hundred twenty-nine million, nine hundred forty thousand, five hundred seventy-seven".