870973791 has 16 divisors (see below), whose sum is σ = 1206616800. Its totient is φ = 558165888.

The previous prime is 870973781. The next prime is 870973793. The reversal of 870973791 is 197379078.

It is a happy number.

It is not a de Polignac number, because 870973791 - 2¹¹ = 870971743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870973793) 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, 1936 + ... + 41781.

It is an arithmetic number, because the mean of its divisors is an integer number (75413550).

Almost surely, 2^870973791 is an apocalyptic number.

870973791 is a deficient number, since it is larger than the sum of its proper divisors (335643009).

870973791 is a wasteful number, since it uses less digits than its factorization.

870973791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43978.

The product of its (nonzero) digits is 666792, while the sum is 51.

The square root of 870973791 is about 29512.2650943637. The cubic root of 870973791 is about 954.9963144143.

The spelling of 870973791 in words is "eight hundred seventy million, nine hundred seventy-three thousand, seven hundred ninety-one".