90150889 has 2 divisors, whose sum is σ = 90150890. Its totient is φ = 90150888.

The previous prime is 90150887. The next prime is 90150959. The reversal of 90150889 is 98805109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82355625 + 7795264 = 9075^2 + 2792^2 .

It is a cyclic number.

It is not a de Polignac number, because 90150889 - 2¹ = 90150887 is a prime.

Together with 90150887, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90150887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45075444 + 45075445.

It is an arithmetic number, because the mean of its divisors is an integer number (45075445).

Almost surely, 2^90150889 is an apocalyptic number.

It is an amenable number.

90150889 is a deficient number, since it is larger than the sum of its proper divisors (1).

90150889 is an equidigital number, since it uses as much as digits as its factorization.

90150889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 90150889 is about 9494.7821986605. The cubic root of 90150889 is about 448.3907773010.

The spelling of 90150889 in words is "ninety million, one hundred fifty thousand, eight hundred eighty-nine".