2640274239 has 8 divisors (see below), whose sum is σ = 3562780032. Its totient is φ = 1738975640.

The previous prime is 2640274211. The next prime is 2640274277. The reversal of 2640274239 is 9324720462.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2640274239 - 2⁵ = 2640274207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2640274197 and 2640274206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640278239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5301507 + ... + 5302004.

It is an arithmetic number, because the mean of its divisors is an integer number (445347504).

Almost surely, 2^2640274239 is an apocalyptic number.

2640274239 is a deficient number, since it is larger than the sum of its proper divisors (922505793).

2640274239 is a wasteful number, since it uses less digits than its factorization.

2640274239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10603597.

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 2640274239 is about 51383.5989300088. The cubic root of 2640274239 is about 1382.1325005967.

The spelling of 2640274239 in words is "two billion, six hundred forty million, two hundred seventy-four thousand, two hundred thirty-nine".