39479142 has 32 divisors (see below), whose sum is σ = 80812800. Its totient is φ = 12853728.

The previous prime is 39479137. The next prime is 39479171. The reversal of 39479142 is 24197493.

It is a self number, because there is not a number n which added to its sum of digits gives 39479142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80823 + ... + 81309.

It is an arithmetic number, because the mean of its divisors is an integer number (2525400).

Almost surely, 2^39479142 is an apocalyptic number.

39479142 is an abundant number, since it is smaller than the sum of its proper divisors (41333658).

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

39479142 is a wasteful number, since it uses less digits than its factorization.

39479142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

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

The square root of 39479142 is about 6283.2429524888. The cubic root of 39479142 is about 340.5042747775.

It can be divided in two parts, 39479 and 142, that added together give a triangular number (39621 = T₂₈₁).

The spelling of 39479142 in words is "thirty-nine million, four hundred seventy-nine thousand, one hundred forty-two".