39869091 has 40 divisors (see below), whose sum is σ = 62569584. Its totient is φ = 25272000.

The previous prime is 39869059. The next prime is 39869099. The reversal of 39869091 is 19096893.

It is not a de Polignac number, because 39869091 - 2⁵ = 39869059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39869099) 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 39 ways as a sum of consecutive naturals, for example, 158716 + ... + 158966.

Almost surely, 2^39869091 is an apocalyptic number.

39869091 is a deficient number, since it is larger than the sum of its proper divisors (22700493).

39869091 is a wasteful number, since it uses less digits than its factorization.

39869091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 39869091 is about 6314.1975737223. The cubic root of 39869091 is about 341.6216961897.

The spelling of 39869091 in words is "thirty-nine million, eight hundred sixty-nine thousand, ninety-one".