239649943 has 6 divisors (see below), whose sum is σ = 259502784. Its totient is φ = 221215176.

The previous prime is 239649937. The next prime is 239649947. The reversal of 239649943 is 349946932.

It is not a de Polignac number, because 239649943 - 2⁵ = 239649911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239649947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708855 + ... + 709192.

It is an arithmetic number, because the mean of its divisors is an integer number (43250464).

Almost surely, 2^239649943 is an apocalyptic number.

239649943 is a deficient number, since it is larger than the sum of its proper divisors (19852841).

239649943 is a wasteful number, since it uses less digits than its factorization.

239649943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418073 (or 1418060 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 49.

The square root of 239649943 is about 15480.6312209806. The cubic root of 239649943 is about 621.1442129264.

The spelling of 239649943 in words is "two hundred thirty-nine million, six hundred forty-nine thousand, nine hundred forty-three".