39129902 has 8 divisors (see below), whose sum is σ = 67079856. Its totient is φ = 16769952.

The previous prime is 39129889. The next prime is 39129919. The reversal of 39129902 is 20992193.

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

It is a super-2 number, since 2×39129902² = 3062298461059208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397483 + ... + 1397510.

It is an arithmetic number, because the mean of its divisors is an integer number (8384982).

Almost surely, 2^39129902 is an apocalyptic number.

39129902 is a deficient number, since it is larger than the sum of its proper divisors (27949954).

39129902 is a wasteful number, since it uses less digits than its factorization.

39129902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795002.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 39129902 is about 6255.3898359735. The cubic root of 39129902 is about 339.4972442574.

The spelling of 39129902 in words is "thirty-nine million, one hundred twenty-nine thousand, nine hundred two".