90211683 has 4 divisors (see below), whose sum is σ = 120282248. Its totient is φ = 60141120.

The previous prime is 90211679. The next prime is 90211697. The reversal of 90211683 is 38611209.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90211683 - 2² = 90211679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90211683.

It is not an unprimeable number, because it can be changed into a prime (90211613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15035278 + ... + 15035283.

It is an arithmetic number, because the mean of its divisors is an integer number (30070562).

Almost surely, 2^90211683 is an apocalyptic number.

90211683 is a deficient number, since it is larger than the sum of its proper divisors (30070565).

90211683 is a wasteful number, since it uses less digits than its factorization.

90211683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30070564.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 90211683 is about 9497.9831016906. The cubic root of 90211683 is about 448.4915466665.

The spelling of 90211683 in words is "ninety million, two hundred eleven thousand, six hundred eighty-three".