90435199 has 4 divisors (see below), whose sum is σ = 90477864. Its totient is φ = 90392536.

The previous prime is 90435181. The next prime is 90435227. The reversal of 90435199 is 99153409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99153409 = 47 ⋅2109647.

It is a cyclic number.

It is not a de Polignac number, because 90435199 - 2⁵ = 90435167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90435179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17977 + ... + 22450.

It is an arithmetic number, because the mean of its divisors is an integer number (22619466).

Almost surely, 2^90435199 is an apocalyptic number.

90435199 is a deficient number, since it is larger than the sum of its proper divisors (42665).

90435199 is a wasteful number, since it uses less digits than its factorization.

90435199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42664.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 90435199 is about 9509.7423203786. The cubic root of 90435199 is about 448.8616478743.

The spelling of 90435199 in words is "ninety million, four hundred thirty-five thousand, one hundred ninety-nine".