84499690 has 64 divisors (see below), whose sum is σ = 178381440. Its totient is φ = 28477440.

The previous prime is 84499643. The next prime is 84499691. The reversal of 84499690 is 9699448.

It is a super-2 number, since 2×84499690² = 14280395220192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84499691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136201 + ... + 136819.

It is an arithmetic number, because the mean of its divisors is an integer number (2787210).

Almost surely, 2^84499690 is an apocalyptic number.

84499690 is an abundant number, since it is smaller than the sum of its proper divisors (93881750).

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

84499690 is a wasteful number, since it uses less digits than its factorization.

84499690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 84499690 is about 9192.3712936326. The cubic root of 84499690 is about 438.8186111428.

The spelling of 84499690 in words is "eighty-four million, four hundred ninety-nine thousand, six hundred ninety".