84459690 has 96 divisors (see below), whose sum is σ = 254292480. Its totient is φ = 19049472.

The previous prime is 84459679. The next prime is 84459719. The reversal of 84459690 is 9695448.

It is a happy number.

It is a super-2 number, since 2×84459690² = 14266878469792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48922 + ... + 50618.

It is an arithmetic number, because the mean of its divisors is an integer number (2648880).

Almost surely, 2^84459690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84459690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127146240).

84459690 is an abundant number, since it is smaller than the sum of its proper divisors (169832790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84459690 is a wasteful number, since it uses less digits than its factorization.

84459690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 84459690 is about 9190.1953189255. The cubic root of 84459690 is about 438.7493583647.

The spelling of 84459690 in words is "eighty-four million, four hundred fifty-nine thousand, six hundred ninety".