90433491 has 8 divisors (see below), whose sum is σ = 120740304. Its totient is φ = 60207840.

The previous prime is 90433487. The next prime is 90433531. The reversal of 90433491 is 19433409.

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

It is not a de Polignac number, because 90433491 - 2² = 90433487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90433411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17640 + ... + 22181.

It is an arithmetic number, because the mean of its divisors is an integer number (15092538).

Almost surely, 2^90433491 is an apocalyptic number.

90433491 is a deficient number, since it is larger than the sum of its proper divisors (30306813).

90433491 is a wasteful number, since it uses less digits than its factorization.

90433491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40581.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 90433491 is about 9509.6525173110. The cubic root of 90433491 is about 448.8588220552.

The spelling of 90433491 in words is "ninety million, four hundred thirty-three thousand, four hundred ninety-one".