90585442 has 4 divisors (see below), whose sum is σ = 135878166. Its totient is φ = 45292720.

The previous prime is 90585437. The next prime is 90585461. The reversal of 90585442 is 24458509.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64176121 + 26409321 = 8011^2 + 5139^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22646359 + ... + 22646362.

Almost surely, 2^90585442 is an apocalyptic number.

90585442 is a deficient number, since it is larger than the sum of its proper divisors (45292724).

90585442 is a wasteful number, since it uses less digits than its factorization.

90585442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45292723.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 90585442 is about 9517.6384676032. The cubic root of 90585442 is about 449.1100799372.

The spelling of 90585442 in words is "ninety million, five hundred eighty-five thousand, four hundred forty-two".