7640454239 has 16 divisors (see below), whose sum is σ = 8410521600. Its totient is φ = 6883097760.

The previous prime is 7640454223. The next prime is 7640454253. The reversal of 7640454239 is 9324540467.

It is not a de Polignac number, because 7640454239 - 2⁴ = 7640454223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7640454239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640454209) 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 15 ways as a sum of consecutive naturals, for example, 1412462 + ... + 1417860.

It is an arithmetic number, because the mean of its divisors is an integer number (525657600).

Almost surely, 2^7640454239 is an apocalyptic number.

7640454239 is a deficient number, since it is larger than the sum of its proper divisors (770067361).

7640454239 is a wasteful number, since it uses less digits than its factorization.

7640454239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550.

The product of its (nonzero) digits is 725760, while the sum is 44.

The square root of 7640454239 is about 87409.6919054174. The cubic root of 7640454239 is about 1969.5774333935.

The spelling of 7640454239 in words is "seven billion, six hundred forty million, four hundred fifty-four thousand, two hundred thirty-nine".