129493863 has 16 divisors (see below), whose sum is σ = 192031200. Its totient is φ = 86244480.

The previous prime is 129493831. The next prime is 129493891. The reversal of 129493863 is 368394921.

It is a happy number.

It is not a de Polignac number, because 129493863 - 2⁵ = 129493831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129492863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38593 + ... + 41813.

It is an arithmetic number, because the mean of its divisors is an integer number (12001950).

Almost surely, 2^129493863 is an apocalyptic number.

129493863 is a deficient number, since it is larger than the sum of its proper divisors (62537337).

129493863 is a wasteful number, since it uses less digits than its factorization.

129493863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719 (or 4713 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 129493863 is about 11379.5370292468. The cubic root of 129493863 is about 505.9214142096.

The spelling of 129493863 in words is "one hundred twenty-nine million, four hundred ninety-three thousand, eight hundred sixty-three".