129494366 has 8 divisors (see below), whose sum is σ = 194295024. Its totient is φ = 64729360.

The previous prime is 129494363. The next prime is 129494383. The reversal of 129494366 is 663494921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129494363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3791 + ... + 16533.

It is an arithmetic number, because the mean of its divisors is an integer number (24286878).

Almost surely, 2^129494366 is an apocalyptic number.

129494366 is a deficient number, since it is larger than the sum of its proper divisors (64800658).

129494366 is a wasteful number, since it uses less digits than its factorization.

129494366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826.

The product of its digits is 279936, while the sum is 44.

The square root of 129494366 is about 11379.5591303003. The cubic root of 129494366 is about 505.9220692681.

The spelling of 129494366 in words is "one hundred twenty-nine million, four hundred ninety-four thousand, three hundred sixty-six".