239940813649599 has 40 divisors (see below), whose sum is σ = 386911057246560. Its totient is φ = 147729676336704.

The previous prime is 239940813649597. The next prime is 239940813649619. The reversal of 239940813649599 is 995946318049932.

239940813649599 is a `hidden beast` number, since 2 + 3 + 9 + 9 + 4 + 0 + 8 + 1 + 36 + 495 + 99 = 666.

It is not a de Polignac number, because 239940813649599 - 2¹ = 239940813649597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239940813649597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2220509892 + ... + 2220617945.

It is an arithmetic number, because the mean of its divisors is an integer number (9672776431164).

Almost surely, 2^{239940813649599} is an apocalyptic number.

239940813649599 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

239940813649599 is a deficient number, since it is larger than the sum of its proper divisors (146970243596961).

239940813649599 is a wasteful number, since it uses less digits than its factorization.

239940813649599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441127901 (or 4441127892 counting only the distinct ones).

The product of its (nonzero) digits is 4081466880, while the sum is 81.

The spelling of 239940813649599 in words is "two hundred thirty-nine trillion, nine hundred forty billion, eight hundred thirteen million, six hundred forty-nine thousand, five hundred ninety-nine".