402004239 has 16 divisors (see below), whose sum is σ = 659699712. Its totient is φ = 212046048.

The previous prime is 402004217. The next prime is 402004247. The reversal of 402004239 is 932400204.

It is a happy number.

It is not a de Polignac number, because 402004239 - 2⁸ = 402003983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402004289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735999 + ... + 736544.

It is an arithmetic number, because the mean of its divisors is an integer number (41231232).

Almost surely, 2^402004239 is an apocalyptic number.

402004239 is a deficient number, since it is larger than the sum of its proper divisors (257695473).

402004239 is a wasteful number, since it uses less digits than its factorization.

402004239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472566.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 402004239 is about 20050.0433665366. The cubic root of 402004239 is about 738.0348633290.

The spelling of 402004239 in words is "four hundred two million, four thousand, two hundred thirty-nine".