90895187 has 2 divisors, whose sum is σ = 90895188. Its totient is φ = 90895186.

The previous prime is 90895171. The next prime is 90895201. The reversal of 90895187 is 78159809.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90895187 - 2⁴ = 90895171 is a prime.

It is not a weakly prime, because it can be changed into another prime (90895117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45447593 + 45447594.

It is an arithmetic number, because the mean of its divisors is an integer number (45447594).

Almost surely, 2^90895187 is an apocalyptic number.

90895187 is a deficient number, since it is larger than the sum of its proper divisors (1).

90895187 is an equidigital number, since it uses as much as digits as its factorization.

90895187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 90895187 is about 9533.8967374311. The cubic root of 90895187 is about 449.6213885371.

It can be divided in two parts, 90895 and 187, that multiplied together give a triangular number (16997365 = T₅₈₃₀).

The spelling of 90895187 in words is "ninety million, eight hundred ninety-five thousand, one hundred eighty-seven".