5039991 has 12 divisors (see below), whose sum is σ = 7941960. Its totient is φ = 3054480.

The previous prime is 5039977. The next prime is 5039999. The reversal of 5039991 is 1999305.

It is not a de Polignac number, because 5039991 - 2⁷ = 5039863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5039999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25356 + ... + 25553.

It is an arithmetic number, because the mean of its divisors is an integer number (661830).

Almost surely, 2^5039991 is an apocalyptic number.

5039991 is a deficient number, since it is larger than the sum of its proper divisors (2901969).

5039991 is a wasteful number, since it uses less digits than its factorization.

5039991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50926 (or 50923 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 5039991 is about 2244.9924276042. The cubic root of 5039991 is about 171.4522755912.

The spelling of 5039991 in words is "five million, thirty-nine thousand, nine hundred ninety-one".