9474812639 has 4 divisors (see below), whose sum is σ = 9475799424. Its totient is φ = 9473825856.

The previous prime is 9474812591. The next prime is 9474812653. The reversal of 9474812639 is 9362184749.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9474812639 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 (9474812239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478847 + ... + 498240.

It is an arithmetic number, because the mean of its divisors is an integer number (2368949856).

Almost surely, 2^9474812639 is an apocalyptic number.

9474812639 is a deficient number, since it is larger than the sum of its proper divisors (986785).

9474812639 is an equidigital number, since it uses as much as digits as its factorization.

9474812639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986784.

The product of its digits is 2612736, while the sum is 53.

The square root of 9474812639 is about 97338.6492560894. The cubic root of 9474812639 is about 2116.0383948416.

The spelling of 9474812639 in words is "nine billion, four hundred seventy-four million, eight hundred twelve thousand, six hundred thirty-nine".