39408091 has 8 divisors (see below), whose sum is σ = 41945904. Its totient is φ = 36894720.

The previous prime is 39408073. The next prime is 39408107. The reversal of 39408091 is 19080493.

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 39408091 - 2⁵ = 39408059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39408491) 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, 2725 + ... + 9286.

It is an arithmetic number, because the mean of its divisors is an integer number (5243238).

Almost surely, 2^39408091 is an apocalyptic number.

39408091 is a deficient number, since it is larger than the sum of its proper divisors (2537813).

39408091 is a wasteful number, since it uses less digits than its factorization.

39408091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12221.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 39408091 is about 6277.5863992461. The cubic root of 39408091 is about 340.2998824825.

The spelling of 39408091 in words is "thirty-nine million, four hundred eight thousand, ninety-one".