90898771 has 2 divisors, whose sum is σ = 90898772. Its totient is φ = 90898770.

The previous prime is 90898741. The next prime is 90898777. The reversal of 90898771 is 17789809.

It is a strong prime.

It is an emirp because it is prime and its reverse (17789809) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90898771 is a prime.

It is not a weakly prime, because it can be changed into another prime (90898777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45449385 + 45449386.

It is an arithmetic number, because the mean of its divisors is an integer number (45449386).

Almost surely, 2^90898771 is an apocalyptic number.

90898771 is a deficient number, since it is larger than the sum of its proper divisors (1).

90898771 is an equidigital number, since it uses as much as digits as its factorization.

90898771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 90898771 is about 9534.0846964981. The cubic root of 90898771 is about 449.6272979878.

The spelling of 90898771 in words is "ninety million, eight hundred ninety-eight thousand, seven hundred seventy-one".