129773907 has 12 divisors (see below), whose sum is σ = 194394200. Its totient is φ = 86515776.

The previous prime is 129773879. The next prime is 129773953. The reversal of 129773907 is 709377921.

It is not a de Polignac number, because 129773907 - 2¹⁹ = 129249619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129771907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266782 + ... + 267267.

Almost surely, 2^129773907 is an apocalyptic number.

129773907 is a deficient number, since it is larger than the sum of its proper divisors (64620293).

129773907 is an frugal number, since it uses more digits than its factorization.

129773907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534064 (or 534052 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 129773907 is about 11391.8351023880. The cubic root of 129773907 is about 506.2858542508.

The spelling of 129773907 in words is "one hundred twenty-nine million, seven hundred seventy-three thousand, nine hundred seven".