83990490 has 32 divisors (see below), whose sum is σ = 201821760. Its totient is φ = 22370304.

The previous prime is 83990483. The next prime is 83990513. The reversal of 83990490 is 9409938.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 41277 + ... + 43263.

It is an arithmetic number, because the mean of its divisors is an integer number (6306930).

Almost surely, 2^83990490 is an apocalyptic number.

83990490 is an abundant number, since it is smaller than the sum of its proper divisors (117831270).

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

83990490 is a wasteful number, since it uses less digits than its factorization.

83990490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 83990490 is about 9164.6325621926. The cubic root of 83990490 is about 437.9353858940.

The spelling of 83990490 in words is "eighty-three million, nine hundred ninety thousand, four hundred ninety".