84264991 has 2 divisors, whose sum is σ = 84264992. Its totient is φ = 84264990.

The previous prime is 84264959. The next prime is 84265067. The reversal of 84264991 is 19946248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84264991 - 2⁵ = 84264959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84264911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42132495 + 42132496.

It is an arithmetic number, because the mean of its divisors is an integer number (42132496).

Almost surely, 2^84264991 is an apocalyptic number.

84264991 is a deficient number, since it is larger than the sum of its proper divisors (1).

84264991 is an equidigital number, since it uses as much as digits as its factorization.

84264991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 84264991 is about 9179.5964508251. The cubic root of 84264991 is about 438.4119595960.

The spelling of 84264991 in words is "eighty-four million, two hundred sixty-four thousand, nine hundred ninety-one".