90945853 has 8 divisors (see below), whose sum is σ = 91719680. Its totient is φ = 90175680.

The previous prime is 90945823. The next prime is 90945857. The reversal of 90945853 is 35854909.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90945853 is a prime.

It is a super-2 number, since 2×90945853² = 16542296355795218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90945857) 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, 70468 + ... + 71746.

It is an arithmetic number, because the mean of its divisors is an integer number (11464960).

Almost surely, 2^90945853 is an apocalyptic number.

It is an amenable number.

90945853 is a deficient number, since it is larger than the sum of its proper divisors (773827).

90945853 is a wasteful number, since it uses less digits than its factorization.

90945853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 90945853 is about 9536.5535179120. The cubic root of 90945853 is about 449.7049143600.

The spelling of 90945853 in words is "ninety million, nine hundred forty-five thousand, eight hundred fifty-three".