39422640639 has 8 divisors (see below), whose sum is σ = 52567115440. Its totient is φ = 26279963136.

The previous prime is 39422640623. The next prime is 39422640659. The reversal of 39422640639 is 93604622493.

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

It is not a de Polignac number, because 39422640639 - 2⁴ = 39422640623 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 (39422640659) 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, 397282 + ... + 486495.

It is an arithmetic number, because the mean of its divisors is an integer number (6570889430).

Almost surely, 2^39422640639 is an apocalyptic number.

39422640639 is a deficient number, since it is larger than the sum of its proper divisors (13144474801).

39422640639 is a wasteful number, since it uses less digits than its factorization.

39422640639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898649.

The product of its (nonzero) digits is 1679616, while the sum is 48.

The spelling of 39422640639 in words is "thirty-nine billion, four hundred twenty-two million, six hundred forty thousand, six hundred thirty-nine".