129493862 has 16 divisors (see below), whose sum is σ = 205885152. Its totient is φ = 60873600.

The previous prime is 129493831. The next prime is 129493891. The reversal of 129493862 is 268394921.

It is a congruent number.

It is an unprimeable number.

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, 49487 + ... + 52037.

It is an arithmetic number, because the mean of its divisors is an integer number (12867822).

Almost surely, 2^129493862 is an apocalyptic number.

129493862 is a deficient number, since it is larger than the sum of its proper divisors (76391290).

129493862 is a wasteful number, since it uses less digits than its factorization.

129493862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063.

The product of its digits is 186624, while the sum is 44.

The square root of 129493862 is about 11379.5369853083. The cubic root of 129493862 is about 505.9214129073.

The spelling of 129493862 in words is "one hundred twenty-nine million, four hundred ninety-three thousand, eight hundred sixty-two".