239949423 has 48 divisors (see below), whose sum is σ = 425568000. Its totient is φ = 129865680.

The previous prime is 239949397. The next prime is 239949433. The reversal of 239949423 is 324949932.

It is a happy number.

It is not a de Polignac number, because 239949423 - 2¹⁰ = 239948399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239949433) 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 47 ways as a sum of consecutive naturals, for example, 56608 + ... + 60698.

It is an arithmetic number, because the mean of its divisors is an integer number (8866000).

Almost surely, 2^239949423 is an apocalyptic number.

239949423 is a deficient number, since it is larger than the sum of its proper divisors (185618577).

239949423 is a wasteful number, since it uses less digits than its factorization.

239949423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137 (or 4120 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 239949423 is about 15490.3009331646. The cubic root of 239949423 is about 621.4028440966.

The spelling of 239949423 in words is "two hundred thirty-nine million, nine hundred forty-nine thousand, four hundred twenty-three".