90450433 has 8 divisors (see below), whose sum is σ = 91868040. Its totient is φ = 89041920.

The previous prime is 90450413. The next prime is 90450461. The reversal of 90450433 is 33405409.

It can be written as a sum of positive squares in 4 ways, for example, as 27279729 + 63170704 = 5223^2 + 7948^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90450433 - 2⁵ = 90450401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90450403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19341 + ... + 23557.

It is an arithmetic number, because the mean of its divisors is an integer number (11483505).

Almost surely, 2^90450433 is an apocalyptic number.

It is an amenable number.

90450433 is a deficient number, since it is larger than the sum of its proper divisors (1417607).

90450433 is a wasteful number, since it uses less digits than its factorization.

90450433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 90450433 is about 9510.5432547253. The cubic root of 90450433 is about 448.8868503563.

The spelling of 90450433 in words is "ninety million, four hundred fifty thousand, four hundred thirty-three".