90450459 has 32 divisors (see below), whose sum is σ = 150151680. Its totient is φ = 53330400.

The previous prime is 90450413. The next prime is 90450461. The reversal of 90450459 is 95405409.

It is not a de Polignac number, because 90450459 - 2¹¹ = 90448411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90450499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6874 + ... + 15104.

It is an arithmetic number, because the mean of its divisors is an integer number (4692240).

Almost surely, 2^90450459 is an apocalyptic number.

90450459 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

90450459 is a deficient number, since it is larger than the sum of its proper divisors (59701221).

90450459 is a wasteful number, since it uses less digits than its factorization.

90450459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8288 (or 8282 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 90450459 is about 9510.5446216292. The cubic root of 90450459 is about 448.8868933671.

It can be divided in two parts, 90450 and 459, that added together give a palindrome (90909).

The spelling of 90450459 in words is "ninety million, four hundred fifty thousand, four hundred fifty-nine".