8712593947 has 4 divisors (see below), whose sum is σ = 8712784480. Its totient is φ = 8712403416.

The previous prime is 8712593893. The next prime is 8712593951. The reversal of 8712593947 is 7493952178.

It is a happy number.

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

It is a 3-Lehmer number, since φ(8712593947) divides (8712593947-1)³.

It is a cyclic number.

It is not a de Polignac number, because 8712593947 - 2¹⁹ = 8712069659 is a prime.

It is a deceptive number, since it divides R_8712593946.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8715593947) 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, 19054 + ... + 133372.

It is an arithmetic number, because the mean of its divisors is an integer number (2178196120).

Almost surely, 2^8712593947 is an apocalyptic number.

8712593947 is the 76213-rd pentagonal number.

8712593947 is a deficient number, since it is larger than the sum of its proper divisors (190533).

8712593947 is a wasteful number, since it uses less digits than its factorization.

8712593947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190532.

The product of its digits is 3810240, while the sum is 55.

The square root of 8712593947 is about 93341.2767589987. The cubic root of 8712593947 is about 2057.7020552782.

The spelling of 8712593947 in words is "eight billion, seven hundred twelve million, five hundred ninety-three thousand, nine hundred forty-seven".