39308081 has 4 divisors (see below), whose sum is σ = 41017152. Its totient is φ = 37599012.

The previous prime is 39308051. The next prime is 39308099. The reversal of 39308081 is 18080393.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39308081 - 2¹⁴ = 39291697 is a prime.

It is a super-2 number, since 2×39308081² = 3090250463805122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39308011) 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, 854501 + ... + 854546.

It is an arithmetic number, because the mean of its divisors is an integer number (10254288).

Almost surely, 2^39308081 is an apocalyptic number.

It is an amenable number.

39308081 is a deficient number, since it is larger than the sum of its proper divisors (1709071).

39308081 is a wasteful number, since it uses less digits than its factorization.

39308081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709070.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 39308081 is about 6269.6156979515. The cubic root of 39308081 is about 340.0117671821.

The spelling of 39308081 in words is "thirty-nine million, three hundred eight thousand, eighty-one".