90524471894 has 4 divisors (see below), whose sum is σ = 135786707844. Its totient is φ = 45262235946.

The previous prime is 90524471881. The next prime is 90524471899. The reversal of 90524471894 is 49817442509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49817442509 = 181 ⋅275234489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90524471899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22631117972 + ... + 22631117975.

It is an arithmetic number, because the mean of its divisors is an integer number (33946676961).

Almost surely, 2^90524471894 is an apocalyptic number.

90524471894 is a deficient number, since it is larger than the sum of its proper divisors (45262235950).

90524471894 is a wasteful number, since it uses less digits than its factorization.

90524471894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45262235949.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 90524471894 in words is "ninety billion, five hundred twenty-four million, four hundred seventy-one thousand, eight hundred ninety-four".