39304881 has 48 divisors (see below), whose sum is σ = 72483840. Its totient is φ = 19928160.

The previous prime is 39304789. The next prime is 39304883. The reversal of 39304881 is 18840393.

It is not a de Polignac number, because 39304881 - 2⁷ = 39304753 is a prime.

It is a super-2 number, since 2×39304881² = 3089747340848322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39304883) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29140 + ... + 30458.

It is an arithmetic number, because the mean of its divisors is an integer number (1510080).

Almost surely, 2^39304881 is an apocalyptic number.

It is an amenable number.

39304881 is a deficient number, since it is larger than the sum of its proper divisors (33178959).

39304881 is a wasteful number, since it uses less digits than its factorization.

39304881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 39304881 is about 6269.3604937027. The cubic root of 39304881 is about 340.0025403501.

It can be divided in two parts, 393048 and 81, that added together give a square (393129 = 627²).

The spelling of 39304881 in words is "thirty-nine million, three hundred four thousand, eight hundred eighty-one".