90454893 has 16 divisors (see below), whose sum is σ = 122249856. Its totient is φ = 59486400.

The previous prime is 90454879. The next prime is 90454901. The reversal of 90454893 is 39845409.

It is not a de Polignac number, because 90454893 - 2⁶ = 90454829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90454813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147255 + ... + 147867.

It is an arithmetic number, because the mean of its divisors is an integer number (7640616).

Almost surely, 2^90454893 is an apocalyptic number.

It is an amenable number.

90454893 is a deficient number, since it is larger than the sum of its proper divisors (31794963).

90454893 is a wasteful number, since it uses less digits than its factorization.

90454893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 90454893 is about 9510.7777284510. Note that the first 4 decimals coincide. The cubic root of 90454893 is about 448.8942282552.

The spelling of 90454893 in words is "ninety million, four hundred fifty-four thousand, eight hundred ninety-three".