967947857 has 4 divisors (see below), whose sum is σ = 970475520. Its totient is φ = 965420196.

The previous prime is 967947839. The next prime is 967947859. The reversal of 967947857 is 758749769.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 758749769 = 31 ⋅24475799.

It is a cyclic number.

It is not a de Polignac number, because 967947857 - 2⁸ = 967947601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 967947857.

It is not an unprimeable number, because it can be changed into a prime (967947859) 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, 1263257 + ... + 1264022.

It is an arithmetic number, because the mean of its divisors is an integer number (242618880).

Almost surely, 2^967947857 is an apocalyptic number.

It is an amenable number.

967947857 is a deficient number, since it is larger than the sum of its proper divisors (2527663).

967947857 is a wasteful number, since it uses less digits than its factorization.

967947857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527662.

The product of its digits is 26671680, while the sum is 62.

The square root of 967947857 is about 31111.8603911756. The cubic root of 967947857 is about 989.1997263585.

The spelling of 967947857 in words is "nine hundred sixty-seven million, nine hundred forty-seven thousand, eight hundred fifty-seven".