5138931 has 8 divisors (see below), whose sum is σ = 7830784. Its totient is φ = 2936520.

The previous prime is 5138929. The next prime is 5138941. The reversal of 5138931 is 1398315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5138931 - 2¹ = 5138929 is a prime.

It is a super-2 number, since 2×5138931² = 52817223645522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5138941) 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, 122335 + ... + 122376.

It is an arithmetic number, because the mean of its divisors is an integer number (978848).

Almost surely, 2^5138931 is an apocalyptic number.

5138931 is a deficient number, since it is larger than the sum of its proper divisors (2691853).

5138931 is a wasteful number, since it uses less digits than its factorization.

5138931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244721.

The product of its digits is 3240, while the sum is 30.

The square root of 5138931 is about 2266.9210396483. The cubic root of 5138931 is about 172.5669389442.

The spelling of 5138931 in words is "five million, one hundred thirty-eight thousand, nine hundred thirty-one".