90212435 has 4 divisors (see below), whose sum is σ = 108254928. Its totient is φ = 72169944.

The previous prime is 90212429. The next prime is 90212453. The reversal of 90212435 is 53421209.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90212435 - 2¹⁶ = 90146899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9021239 + ... + 9021248.

It is an arithmetic number, because the mean of its divisors is an integer number (27063732).

Almost surely, 2^90212435 is an apocalyptic number.

90212435 is a deficient number, since it is larger than the sum of its proper divisors (18042493).

90212435 is a wasteful number, since it uses less digits than its factorization.

90212435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18042492.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 90212435 is about 9498.0226889601. The cubic root of 90212435 is about 448.4927928640.

The spelling of 90212435 in words is "ninety million, two hundred twelve thousand, four hundred thirty-five".