90450440707 has 16 divisors (see below), whose sum is σ = 99053107200. Its totient is φ = 81911692800.

The previous prime is 90450440701. The next prime is 90450440719. The reversal of 90450440707 is 70704405409.

It is a cyclic number.

It is not a de Polignac number, because 90450440707 - 2¹⁵ = 90450407939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90450440707.

It is not an unprimeable number, because it can be changed into a prime (90450440701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3101998 + ... + 3131020.

It is an arithmetic number, because the mean of its divisors is an integer number (6190819200).

Almost surely, 2^90450440707 is an apocalyptic number.

90450440707 is a deficient number, since it is larger than the sum of its proper divisors (8602666493).

90450440707 is a wasteful number, since it uses less digits than its factorization.

90450440707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30114.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 90450440707 in words is "ninety billion, four hundred fifty million, four hundred forty thousand, seven hundred seven".