90876193 has 2 divisors, whose sum is σ = 90876194. Its totient is φ = 90876192.

The previous prime is 90876139. The next prime is 90876217. The reversal of 90876193 is 39167809.

Together with previous prime (90876139) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69605649 + 21270544 = 8343^2 + 4612^2 .

It is an emirp because it is prime and its reverse (39167809) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90876193 is a prime.

It is not a weakly prime, because it can be changed into another prime (90876133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45438096 + 45438097.

It is an arithmetic number, because the mean of its divisors is an integer number (45438097).

Almost surely, 2^90876193 is an apocalyptic number.

It is an amenable number.

90876193 is a deficient number, since it is larger than the sum of its proper divisors (1).

90876193 is an equidigital number, since it uses as much as digits as its factorization.

90876193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 90876193 is about 9532.9005554448. The cubic root of 90876193 is about 449.5900678337.

The spelling of 90876193 in words is "ninety million, eight hundred seventy-six thousand, one hundred ninety-three".