7872411639 has 12 divisors (see below), whose sum is σ = 10624564856. Its totient is φ = 5185028592.

The previous prime is 7872411571. The next prime is 7872411649. The reversal of 7872411639 is 9361142787.

It is a happy number.

It is not a de Polignac number, because 7872411639 - 2¹³ = 7872403447 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 (7872411649) 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, 169792 + ... + 211125.

Almost surely, 2^7872411639 is an apocalyptic number.

7872411639 is a deficient number, since it is larger than the sum of its proper divisors (2752153217).

7872411639 is an equidigital number, since it uses as much as digits as its factorization.

7872411639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381086 (or 381003 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 7872411639 is about 88726.6117858673. The cubic root of 7872411639 is about 1989.3106068035.

The spelling of 7872411639 in words is "seven billion, eight hundred seventy-two million, four hundred eleven thousand, six hundred thirty-nine".