90433033409 has 4 divisors (see below), whose sum is σ = 90463070640. Its totient is φ = 90402996180.

The previous prime is 90433033387. The next prime is 90433033423.

It is a happy number.

90433033409 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 not a de Polignac number, because 90433033409 - 2¹⁶ = 90432967873 is a prime.

It is a super-2 number, since 2×90433033409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90438033409) 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, 15014099 + ... + 15020120.

It is an arithmetic number, because the mean of its divisors is an integer number (22615767660).

Almost surely, 2^90433033409 is an apocalyptic number.

It is an amenable number.

90433033409 is a deficient number, since it is larger than the sum of its proper divisors (30037231).

90433033409 is a wasteful number, since it uses less digits than its factorization.

90433033409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30037230.

The product of its (nonzero) digits is 104976, while the sum is 38.

It can be divided in two parts, 904330 and 33409, that added together give a palindrome (937739).

The spelling of 90433033409 in words is "ninety billion, four hundred thirty-three million, thirty-three thousand, four hundred nine".