84149289 has 24 divisors (see below), whose sum is σ = 139186112. Its totient is φ = 47990880.

The previous prime is 84149287. The next prime is 84149293. The reversal of 84149289 is 98294148.

84149289 is a `hidden beast` number, since 84 + 1 + 492 + 89 = 666.

It is not a de Polignac number, because 84149289 - 2¹ = 84149287 is a prime.

It is a super-2 number, since 2×84149289² = 14162205678411042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84149287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42567 + ... + 44499.

Almost surely, 2^84149289 is an apocalyptic number.

It is an amenable number.

84149289 is a deficient number, since it is larger than the sum of its proper divisors (55036823).

84149289 is a wasteful number, since it uses less digits than its factorization.

84149289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637 (or 2634 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 84149289 is about 9173.2921571266. The cubic root of 84149289 is about 438.2112104509.

The spelling of 84149289 in words is "eighty-four million, one hundred forty-nine thousand, two hundred eighty-nine".