4013239 has 8 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 3915000.

The previous prime is 4013227. The next prime is 4013267. The reversal of 4013239 is 9323104.

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 4013239 - 2⁷ = 4013111 is a prime.

It is a super-2 number, since 2×4013239² = 32212174542242, 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 (4013209) 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, 14674 + ... + 14944.

It is an arithmetic number, because the mean of its divisors is an integer number (514080).

Almost surely, 2^4013239 is an apocalyptic number.

4013239 is a deficient number, since it is larger than the sum of its proper divisors (99401).

4013239 is a wasteful number, since it uses less digits than its factorization.

4013239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 4013239 is about 2003.3070159114. The cubic root of 4013239 is about 158.9150423602.

The spelling of 4013239 in words is "four million, thirteen thousand, two hundred thirty-nine".