8406730639 has 16 divisors (see below), whose sum is σ = 8972532000. Its totient is φ = 7848991744.

The previous prime is 8406730603. The next prime is 8406730649. The reversal of 8406730639 is 9360376048.

It is a cyclic number.

It is not a de Polignac number, because 8406730639 - 2¹¹ = 8406728591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8406730649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2579499 + ... + 2582755.

It is an arithmetic number, because the mean of its divisors is an integer number (560783250).

Almost surely, 2^8406730639 is an apocalyptic number.

8406730639 is a deficient number, since it is larger than the sum of its proper divisors (565801361).

8406730639 is a wasteful number, since it uses less digits than its factorization.

8406730639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4442.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 8406730639 is about 91688.2251927694. The cubic root of 8406730639 is about 2033.3355049486.

The spelling of 8406730639 in words is "eight billion, four hundred six million, seven hundred thirty thousand, six hundred thirty-nine".