5139864 has 24 divisors (see below), whose sum is σ = 13920660. Its totient is φ = 1713264.

The previous prime is 5139863. The next prime is 5139877. The reversal of 5139864 is 4689315.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5139863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35622 + ... + 35765.

Almost surely, 2^5139864 is an apocalyptic number.

It is an amenable number.

5139864 is an abundant number, since it is smaller than the sum of its proper divisors (8780796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5139864 is a wasteful number, since it uses less digits than its factorization.

5139864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71399 (or 71392 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 5139864 is about 2267.1268160383. The cubic root of 5139864 is about 172.5773817912.

The spelling of 5139864 in words is "five million, one hundred thirty-nine thousand, eight hundred sixty-four".