90375149 has 2 divisors, whose sum is σ = 90375150. Its totient is φ = 90375148.

The previous prime is 90375143. The next prime is 90375157. The reversal of 90375149 is 94157309.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62125924 + 28249225 = 7882^2 + 5315^2 .

It is a cyclic number.

It is not a de Polignac number, because 90375149 - 2⁴ = 90375133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90375143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45187574 + 45187575.

It is an arithmetic number, because the mean of its divisors is an integer number (45187575).

Almost surely, 2^90375149 is an apocalyptic number.

It is an amenable number.

90375149 is a deficient number, since it is larger than the sum of its proper divisors (1).

90375149 is an equidigital number, since it uses as much as digits as its factorization.

90375149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 90375149 is about 9506.5845075926. The cubic root of 90375149 is about 448.7622761311.

The spelling of 90375149 in words is "ninety million, three hundred seventy-five thousand, one hundred forty-nine".