84699091 has 4 divisors (see below), whose sum is σ = 84851712. Its totient is φ = 84546472.

The previous prime is 84699089. The next prime is 84699101. The reversal of 84699091 is 19099648.

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

It is a cyclic number.

It is not a de Polignac number, because 84699091 - 2¹ = 84699089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84699001) 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, 75475 + ... + 76588.

It is an arithmetic number, because the mean of its divisors is an integer number (21212928).

Almost surely, 2^84699091 is an apocalyptic number.

84699091 is a deficient number, since it is larger than the sum of its proper divisors (152621).

84699091 is a wasteful number, since it uses less digits than its factorization.

84699091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152620.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 84699091 is about 9203.2109070693. The cubic root of 84699091 is about 439.1635123381.

The spelling of 84699091 in words is "eighty-four million, six hundred ninety-nine thousand, ninety-one".