129848931 has 12 divisors (see below), whose sum is σ = 190635120. Its totient is φ = 85146480.

The previous prime is 129848923. The next prime is 129848959. The reversal of 129848931 is 139848921.

It is not a de Polignac number, because 129848931 - 2³ = 129848923 is a prime.

It is a super-2 number, since 2×129848931² = 33721489763685522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129848231) 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 11 ways as a sum of consecutive naturals, for example, 117711 + ... + 118808.

It is an arithmetic number, because the mean of its divisors is an integer number (15886260).

Almost surely, 2^129848931 is an apocalyptic number.

129848931 is a deficient number, since it is larger than the sum of its proper divisors (60786189).

129848931 is a wasteful number, since it uses less digits than its factorization.

129848931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236586 (or 236583 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 129848931 is about 11395.1275113533. The cubic root of 129848931 is about 506.3833989564.

The spelling of 129848931 in words is "one hundred twenty-nine million, eight hundred forty-eight thousand, nine hundred thirty-one".