129970394 has 8 divisors (see below), whose sum is σ = 195086100. Its totient is φ = 64941696.

The previous prime is 129970331. The next prime is 129970417. The reversal of 129970394 is 493079921.

It can be written as a sum of positive squares in 2 ways, for example, as 126855169 + 3115225 = 11263^2 + 1765^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17879 + ... + 24074.

Almost surely, 2^129970394 is an apocalyptic number.

129970394 is a deficient number, since it is larger than the sum of its proper divisors (65115706).

129970394 is a wasteful number, since it uses less digits than its factorization.

129970394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43504.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 129970394 is about 11400.4558680783. The cubic root of 129970394 is about 506.5412430964.

The spelling of 129970394 in words is "one hundred twenty-nine million, nine hundred seventy thousand, three hundred ninety-four".