84845791 has 4 divisors (see below), whose sum is σ = 87582784. Its totient is φ = 82108800.

The previous prime is 84845777. The next prime is 84845797. The reversal of 84845791 is 19754848.

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-84845791 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 (84845797) 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, 1368450 + ... + 1368511.

It is an arithmetic number, because the mean of its divisors is an integer number (21895696).

Almost surely, 2^84845791 is an apocalyptic number.

84845791 is a deficient number, since it is larger than the sum of its proper divisors (2736993).

84845791 is a wasteful number, since it uses less digits than its factorization.

84845791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736992.

The product of its digits is 322560, while the sum is 46.

The square root of 84845791 is about 9211.1775034466. The cubic root of 84845791 is about 439.4169118614.

The spelling of 84845791 in words is "eighty-four million, eight hundred forty-five thousand, seven hundred ninety-one".