90454369 has 2 divisors, whose sum is σ = 90454370. Its totient is φ = 90454368.

The previous prime is 90454363. The next prime is 90454409. The reversal of 90454369 is 96345409.

It is an a-pointer prime, because the next prime (90454409) can be obtained adding 90454369 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83484769 + 6969600 = 9137^2 + 2640^2 .

It is a cyclic number.

It is not a de Polignac number, because 90454369 - 2³ = 90454361 is a prime.

It is a super-2 number, since 2×90454369² = 16363985742376322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90454361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45227184 + 45227185.

It is an arithmetic number, because the mean of its divisors is an integer number (45227185).

Almost surely, 2^90454369 is an apocalyptic number.

It is an amenable number.

90454369 is a deficient number, since it is larger than the sum of its proper divisors (1).

90454369 is an equidigital number, since it uses as much as digits as its factorization.

90454369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 90454369 is about 9510.7501807166. The cubic root of 90454369 is about 448.8933614473.

The spelling of 90454369 in words is "ninety million, four hundred fifty-four thousand, three hundred sixty-nine".