90023399 has 2 divisors, whose sum is σ = 90023400. Its totient is φ = 90023398.

The previous prime is 90023369. The next prime is 90023429. The reversal of 90023399 is 99332009.

It is a balanced prime because it is at equal distance from previous prime (90023369) and next prime (90023429).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90023399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90023369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45011699 + 45011700.

It is an arithmetic number, because the mean of its divisors is an integer number (45011700).

Almost surely, 2^90023399 is an apocalyptic number.

90023399 is a deficient number, since it is larger than the sum of its proper divisors (1).

90023399 is an equidigital number, since it uses as much as digits as its factorization.

90023399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 90023399 is about 9488.0661359415. The cubic root of 90023399 is about 448.1793084718.

The spelling of 90023399 in words is "ninety million, twenty-three thousand, three hundred ninety-nine".