39129474 has 64 divisors (see below), whose sum is σ = 86169600. Its totient is φ = 11803968.

The previous prime is 39129451. The next prime is 39129479. The reversal of 39129474 is 47492193.

It is a super-2 number, since 2×39129474² = 3062231471033352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39129479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358932 + ... + 359040.

It is an arithmetic number, because the mean of its divisors is an integer number (1346400).

Almost surely, 2^39129474 is an apocalyptic number.

39129474 is an abundant number, since it is smaller than the sum of its proper divisors (47040126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39129474 is a wasteful number, since it uses less digits than its factorization.

39129474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247.

The product of its digits is 54432, while the sum is 39.

The square root of 39129474 is about 6255.3556253821. The cubic root of 39129474 is about 339.4960064543.

The spelling of 39129474 in words is "thirty-nine million, one hundred twenty-nine thousand, four hundred seventy-four".