39072081 has 8 divisors (see below), whose sum is σ = 52830144. Its totient is φ = 25681040.

The previous prime is 39072073. The next prime is 39072083. The reversal of 39072081 is 18027093.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39072081 - 2³ = 39072073 is a prime.

It is a super-2 number, since 2×39072081² = 3053255027341122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39072083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91506 + ... + 91931.

It is an arithmetic number, because the mean of its divisors is an integer number (6603768).

Almost surely, 2^39072081 is an apocalyptic number.

It is an amenable number.

39072081 is a deficient number, since it is larger than the sum of its proper divisors (13758063).

39072081 is a wasteful number, since it uses less digits than its factorization.

39072081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183511.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 39072081 is about 6250.7664330064. The cubic root of 39072081 is about 339.3299404309.

The spelling of 39072081 in words is "thirty-nine million, seventy-two thousand, eighty-one".