39129734 has 12 divisors (see below), whose sum is σ = 68277564. Its totient is φ = 16769844.

The previous prime is 39129707. The next prime is 39129737. The reversal of 39129734 is 43792193.

It is a super-2 number, since 2×39129734² = 3062272165821512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39129737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199544 + ... + 199739.

It is an arithmetic number, because the mean of its divisors is an integer number (5689797).

Almost surely, 2^39129734 is an apocalyptic number.

39129734 is a deficient number, since it is larger than the sum of its proper divisors (29147830).

39129734 is a wasteful number, since it uses less digits than its factorization.

39129734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399299 (or 399292 counting only the distinct ones).

The product of its digits is 40824, while the sum is 38.

The square root of 39129734 is about 6255.3764075394. The cubic root of 39129734 is about 339.4967583918.

The spelling of 39129734 in words is "thirty-nine million, one hundred twenty-nine thousand, seven hundred thirty-four".