39669128 has 16 divisors (see below), whose sum is σ = 75962880. Its totient is φ = 19412368.

The previous prime is 39669121. The next prime is 39669137. The reversal of 39669128 is 82196693.

It is not an unprimeable number, because it can be changed into a prime (39669121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52376 + ... + 53127.

It is an arithmetic number, because the mean of its divisors is an integer number (4747680).

Almost surely, 2^39669128 is an apocalyptic number.

It is an amenable number.

39669128 is a deficient number, since it is larger than the sum of its proper divisors (36293752).

39669128 is a wasteful number, since it uses less digits than its factorization.

39669128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105556 (or 105552 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 39669128 is about 6298.3432742270. The cubic root of 39669128 is about 341.0496053600.

The spelling of 39669128 in words is "thirty-nine million, six hundred sixty-nine thousand, one hundred twenty-eight".