83091090 has 32 divisors (see below), whose sum is σ = 206297280. Its totient is φ = 21393344.

The previous prime is 83091083. The next prime is 83091103. The reversal of 83091090 is 9019038.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46884 + ... + 48623.

It is an arithmetic number, because the mean of its divisors is an integer number (6446790).

Almost surely, 2^83091090 is an apocalyptic number.

83091090 is an abundant number, since it is smaller than the sum of its proper divisors (123206190).

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

83091090 is a wasteful number, since it uses less digits than its factorization.

83091090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95546.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 83091090 is about 9115.4314214962. The cubic root of 83091090 is about 436.3665835107.

The spelling of 83091090 in words is "eighty-three million, ninety-one thousand, ninety".