264840039 has 12 divisors (see below), whose sum is σ = 382689216. Its totient is φ = 176494272.

The previous prime is 264840013. The next prime is 264840041. The reversal of 264840039 is 930048462.

It is a happy number.

264840039 is a `hidden beast` number, since 2 + 648 + 4 + 0 + 0 + 3 + 9 = 666.

It is not a de Polignac number, because 264840039 - 2⁵ = 264840007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264839985 and 264840012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264840539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39199 + ... + 45455.

It is an arithmetic number, because the mean of its divisors is an integer number (31890768).

Almost surely, 2^264840039 is an apocalyptic number.

264840039 is a deficient number, since it is larger than the sum of its proper divisors (117849177).

264840039 is a wasteful number, since it uses less digits than its factorization.

264840039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10966 (or 10963 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 264840039 is about 16273.9066913879. The cubic root of 264840039 is about 642.1865632430.

The spelling of 264840039 in words is "two hundred sixty-four million, eight hundred forty thousand, thirty-nine".