39000091 has 16 divisors (see below), whose sum is σ = 44906400. Its totient is φ = 33550848.

The previous prime is 39000079. The next prime is 39000107. The reversal of 39000091 is 19000093.

It is a cyclic number.

It is not a de Polignac number, because 39000091 - 2⁹ = 38999579 is a prime.

It is a Duffinian number.

39000091 is a modest number, since divided by 91 gives 39 as remainder.

It is not an unprimeable number, because it can be changed into a prime (39000001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23280 + ... + 24898.

It is an arithmetic number, because the mean of its divisors is an integer number (2806650).

Almost surely, 2^39000091 is an apocalyptic number.

39000091 is a deficient number, since it is larger than the sum of its proper divisors (5906309).

39000091 is a wasteful number, since it uses less digits than its factorization.

39000091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 39000091 is about 6245.0052842251. The cubic root of 39000091 is about 339.1214080621.

The spelling of 39000091 in words is "thirty-nine million, ninety-one", and thus it is an aban number and an uban number.