90296489 has 2 divisors, whose sum is σ = 90296490. Its totient is φ = 90296488.

The previous prime is 90296477. The next prime is 90296519. The reversal of 90296489 is 98469209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89624089 + 672400 = 9467^2 + 820^2 .

It is an emirp because it is prime and its reverse (98469209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90296489 - 2²⁰ = 89247913 is a prime.

It is not a weakly prime, because it can be changed into another prime (90296429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45148244 + 45148245.

It is an arithmetic number, because the mean of its divisors is an integer number (45148245).

Almost surely, 2^90296489 is an apocalyptic number.

It is an amenable number.

90296489 is a deficient number, since it is larger than the sum of its proper divisors (1).

90296489 is an equidigital number, since it uses as much as digits as its factorization.

90296489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 90296489 is about 9502.4464744612. The cubic root of 90296489 is about 448.6320416317.

It can be divided in two parts, 902 and 96489, that multiplied together give a palindrome (87033078).

The spelling of 90296489 in words is "ninety million, two hundred ninety-six thousand, four hundred eighty-nine".