90853187 has 2 divisors, whose sum is σ = 90853188. Its totient is φ = 90853186.

The previous prime is 90853181. The next prime is 90853223. The reversal of 90853187 is 78135809.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90853187 - 2⁶ = 90853123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90853181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45426593 + 45426594.

It is an arithmetic number, because the mean of its divisors is an integer number (45426594).

Almost surely, 2^90853187 is an apocalyptic number.

90853187 is a deficient number, since it is larger than the sum of its proper divisors (1).

90853187 is an equidigital number, since it uses as much as digits as its factorization.

90853187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 90853187 is about 9531.6938158965. The cubic root of 90853187 is about 449.5521255824.

The spelling of 90853187 in words is "ninety million, eight hundred fifty-three thousand, one hundred eighty-seven".