90982237 has 2 divisors, whose sum is σ = 90982238. Its totient is φ = 90982236.

The previous prime is 90982201. The next prime is 90982253. The reversal of 90982237 is 73228909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88003161 + 2979076 = 9381^2 + 1726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90982237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90982237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90982267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45491118 + 45491119.

It is an arithmetic number, because the mean of its divisors is an integer number (45491119).

Almost surely, 2^90982237 is an apocalyptic number.

It is an amenable number.

90982237 is a deficient number, since it is larger than the sum of its proper divisors (1).

90982237 is an equidigital number, since it uses as much as digits as its factorization.

90982237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 90982237 is about 9538.4609345533. The cubic root of 90982237 is about 449.7648763469.

It can be divided in two parts, 90982 and 237, that added together give a palindrome (91219).

The spelling of 90982237 in words is "ninety million, nine hundred eighty-two thousand, two hundred thirty-seven".