90876893 has 2 divisors, whose sum is σ = 90876894. Its totient is φ = 90876892.

The previous prime is 90876889. The next prime is 90876913. The reversal of 90876893 is 39867809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49942489 + 40934404 = 7067^2 + 6398^2 .

It is a cyclic number.

It is not a de Polignac number, because 90876893 - 2² = 90876889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90876823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45438446 + 45438447.

It is an arithmetic number, because the mean of its divisors is an integer number (45438447).

Almost surely, 2^90876893 is an apocalyptic number.

It is an amenable number.

90876893 is a deficient number, since it is larger than the sum of its proper divisors (1).

90876893 is an equidigital number, since it uses as much as digits as its factorization.

90876893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 90876893 is about 9532.9372703275. The cubic root of 90876893 is about 449.5912221963.

The spelling of 90876893 in words is "ninety million, eight hundred seventy-six thousand, eight hundred ninety-three".