90242359 has 2 divisors, whose sum is σ = 90242360. Its totient is φ = 90242358.

The previous prime is 90242309. The next prime is 90242377. The reversal of 90242359 is 95324209.

It is a strong prime.

It is an emirp because it is prime and its reverse (95324209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90242359 - 2²¹ = 88145207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90242309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45121179 + 45121180.

It is an arithmetic number, because the mean of its divisors is an integer number (45121180).

Almost surely, 2^90242359 is an apocalyptic number.

90242359 is a deficient number, since it is larger than the sum of its proper divisors (1).

90242359 is an equidigital number, since it uses as much as digits as its factorization.

90242359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 90242359 is about 9499.5978335927. The cubic root of 90242359 is about 448.5423766222.

It can be divided in two parts, 90242 and 359, that added together give a square (90601 = 301²).

The spelling of 90242359 in words is "ninety million, two hundred forty-two thousand, three hundred fifty-nine".