4000239 has 8 divisors (see below), whose sum is σ = 5926320. Its totient is φ = 2666808.

The previous prime is 4000237. The next prime is 4000261. The reversal of 4000239 is 9320004.

It is not a de Polignac number, because 4000239 - 2¹ = 4000237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000237) 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, 74052 + ... + 74105.

It is an arithmetic number, because the mean of its divisors is an integer number (740790).

Almost surely, 2^4000239 is an apocalyptic number.

4000239 is a deficient number, since it is larger than the sum of its proper divisors (1926081).

4000239 is a wasteful number, since it uses less digits than its factorization.

4000239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148166 (or 148160 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 4000239 is about 2000.0597491075. The cubic root of 4000239 is about 158.7432667076.

The spelling of 4000239 in words is "four million, two hundred thirty-nine", and thus it is an aban number.