90236899 has 8 divisors (see below), whose sum is σ = 92080800. Its totient is φ = 88398336.

The previous prime is 90236897. The next prime is 90236917. The reversal of 90236899 is 99863209.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90236899 - 2¹ = 90236897 is a prime.

It is a super-2 number, since 2×90236899² = 16285395882272402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90236891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63802 + ... + 65200.

It is an arithmetic number, because the mean of its divisors is an integer number (11510100).

Almost surely, 2^90236899 is an apocalyptic number.

90236899 is a deficient number, since it is larger than the sum of its proper divisors (1843901).

90236899 is a wasteful number, since it uses less digits than its factorization.

90236899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 90236899 is about 9499.3104486589. The cubic root of 90236899 is about 448.5333302763.

The spelling of 90236899 in words is "ninety million, two hundred thirty-six thousand, eight hundred ninety-nine".