84022491 has 8 divisors (see below), whose sum is σ = 128034304. Its totient is φ = 48012840.

The previous prime is 84022487. The next prime is 84022507. The reversal of 84022491 is 19422048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84022491 - 2² = 84022487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84022291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000515 + ... + 2000556.

It is an arithmetic number, because the mean of its divisors is an integer number (16004288).

Almost surely, 2^84022491 is an apocalyptic number.

84022491 is a deficient number, since it is larger than the sum of its proper divisors (44011813).

84022491 is a wasteful number, since it uses less digits than its factorization.

84022491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001081.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 84022491 is about 9166.3782924337. The cubic root of 84022491 is about 437.9909977091.

The spelling of 84022491 in words is "eighty-four million, twenty-two thousand, four hundred ninety-one".