9040900081 has 4 divisors (see below), whose sum is σ = 9149826672. Its totient is φ = 8931973492.

The previous prime is 9040900079. The next prime is 9040900103. The reversal of 9040900081 is 1800090409.

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 9040900081 - 2¹ = 9040900079 is a prime.

It is a super-2 number, since 2×9040900081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9040900021) 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, 54463171 + ... + 54463336.

It is an arithmetic number, because the mean of its divisors is an integer number (2287456668).

Almost surely, 2^9040900081 is an apocalyptic number.

It is an amenable number.

9040900081 is a deficient number, since it is larger than the sum of its proper divisors (108926591).

9040900081 is a wasteful number, since it uses less digits than its factorization.

9040900081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108926590.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 9040900081 is about 95083.6478107566. The cubic root of 9040900081 is about 2083.2300099854.

The spelling of 9040900081 in words is "nine billion, forty million, nine hundred thousand, eighty-one".