90898477 has 2 divisors, whose sum is σ = 90898478. Its totient is φ = 90898476.

The previous prime is 90898453. The next prime is 90898481. The reversal of 90898477 is 77489809.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84107241 + 6791236 = 9171^2 + 2606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90898477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90898177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45449238 + 45449239.

It is an arithmetic number, because the mean of its divisors is an integer number (45449239).

Almost surely, 2^90898477 is an apocalyptic number.

It is an amenable number.

90898477 is a deficient number, since it is larger than the sum of its proper divisors (1).

90898477 is an equidigital number, since it uses as much as digits as its factorization.

90898477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 90898477 is about 9534.0692781204. The cubic root of 90898477 is about 449.6268132340.

The spelling of 90898477 in words is "ninety million, eight hundred ninety-eight thousand, four hundred seventy-seven".