4087939 has 8 divisors (see below), whose sum is σ = 4468608. Its totient is φ = 3722880.

The previous prime is 4087931. The next prime is 4087949. The reversal of 4087939 is 9397804.

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

It is a cyclic number.

It is not a de Polignac number, because 4087939 - 2³ = 4087931 is a prime.

It is a super-2 number, since 2×4087939² = 33422490535442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4087931) 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, 3352 + ... + 4405.

It is an arithmetic number, because the mean of its divisors is an integer number (558576).

Almost surely, 2^4087939 is an apocalyptic number.

4087939 is a deficient number, since it is larger than the sum of its proper divisors (380669).

4087939 is a wasteful number, since it uses less digits than its factorization.

4087939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 4087939 is about 2021.8652279517. The cubic root of 4087939 is about 159.8949701321.

The spelling of 4087939 in words is "four million, eighty-seven thousand, nine hundred thirty-nine".