39339428 has 24 divisors (see below), whose sum is σ = 75411000. Its totient is φ = 17873408.

The previous prime is 39339401. The next prime is 39339437. The reversal of 39339428 is 82493393.

It can be written as a sum of positive squares in 4 ways, for example, as 4032064 + 35307364 = 2008^2 + 5942^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8003 + ... + 11946.

It is an arithmetic number, because the mean of its divisors is an integer number (3142125).

Almost surely, 2^39339428 is an apocalyptic number.

It is an amenable number.

39339428 is a deficient number, since it is larger than the sum of its proper divisors (36071572).

39339428 is a wasteful number, since it uses less digits than its factorization.

39339428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19999 (or 19997 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The square root of 39339428 is about 6272.1151137395. The cubic root of 39339428 is about 340.1021261839.

The spelling of 39339428 in words is "thirty-nine million, three hundred thirty-nine thousand, four hundred twenty-eight".