84023691 has 4 divisors (see below), whose sum is σ = 112031592. Its totient is φ = 56015792.

The previous prime is 84023659. The next prime is 84023699. The reversal of 84023691 is 19632048.

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 84023691 - 2⁵ = 84023659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84023699) 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, 14003946 + ... + 14003951.

It is an arithmetic number, because the mean of its divisors is an integer number (28007898).

Almost surely, 2^84023691 is an apocalyptic number.

84023691 is a deficient number, since it is larger than the sum of its proper divisors (28007901).

84023691 is a wasteful number, since it uses less digits than its factorization.

84023691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28007900.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 84023691 is about 9166.4437488047. The cubic root of 84023691 is about 437.9930828123.

It can be divided in two parts, 840 and 23691, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 84023691 in words is "eighty-four million, twenty-three thousand, six hundred ninety-one".