7940152639 has 8 divisors (see below), whose sum is σ = 7957946448. Its totient is φ = 7922376000.

The previous prime is 7940152637. The next prime is 7940152669. The reversal of 7940152639 is 9362510497.

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 7940152639 - 2¹ = 7940152637 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 (7940152631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386009 + ... + 1391725.

It is an arithmetic number, because the mean of its divisors is an integer number (994743306).

Almost surely, 2^7940152639 is an apocalyptic number.

7940152639 is a deficient number, since it is larger than the sum of its proper divisors (17793809).

7940152639 is a wasteful number, since it uses less digits than its factorization.

7940152639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8585.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 7940152639 is about 89107.5341315200. The cubic root of 7940152639 is about 1995.0002314893. Note that the first 3 decimals are identical.

The spelling of 7940152639 in words is "seven billion, nine hundred forty million, one hundred fifty-two thousand, six hundred thirty-nine".