90253035209 has 4 divisors (see below), whose sum is σ = 91600095504. Its totient is φ = 88905974916.

The previous prime is 90253035179. The next prime is 90253035217.

90253035209 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90253035209 is a prime.

It is a super-2 number, since 2×90253035209² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90253035239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673530047 + ... + 673530180.

It is an arithmetic number, because the mean of its divisors is an integer number (22900023876).

Almost surely, 2^90253035209 is an apocalyptic number.

It is an amenable number.

90253035209 is a deficient number, since it is larger than the sum of its proper divisors (1347060295).

90253035209 is a wasteful number, since it uses less digits than its factorization.

90253035209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347060294.

The product of its (nonzero) digits is 72900, while the sum is 38.

It can be divided in two parts, 902530 and 35209, that added together give a palindrome (937739).

The spelling of 90253035209 in words is "ninety billion, two hundred fifty-three million, thirty-five thousand, two hundred nine".