90215383 has 2 divisors, whose sum is σ = 90215384. Its totient is φ = 90215382.

The previous prime is 90215357. The next prime is 90215387. The reversal of 90215383 is 38351209.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90215383 - 2⁵ = 90215351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90215387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45107691 + 45107692.

It is an arithmetic number, because the mean of its divisors is an integer number (45107692).

Almost surely, 2^90215383 is an apocalyptic number.

90215383 is a deficient number, since it is larger than the sum of its proper divisors (1).

90215383 is an equidigital number, since it uses as much as digits as its factorization.

90215383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 90215383 is about 9498.1778778879. The cubic root of 90215383 is about 448.4976781563.

The spelling of 90215383 in words is "ninety million, two hundred fifteen thousand, three hundred eighty-three".