5091988 has 12 divisors (see below), whose sum is σ = 9721152. Its totient is φ = 2314520.

The previous prime is 5091973. The next prime is 5091991. The reversal of 5091988 is 8891905.

It is a self number, because there is not a number n which added to its sum of digits gives 5091988.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57820 + ... + 57907.

It is an arithmetic number, because the mean of its divisors is an integer number (810096).

Almost surely, 2^5091988 is an apocalyptic number.

It is an amenable number.

5091988 is a deficient number, since it is larger than the sum of its proper divisors (4629164).

5091988 is a wasteful number, since it uses less digits than its factorization.

5091988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115742 (or 115740 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 5091988 is about 2256.5433742785. The cubic root of 5091988 is about 172.0398771791.

The spelling of 5091988 in words is "five million, ninety-one thousand, nine hundred eighty-eight".