90946477 has 2 divisors, whose sum is σ = 90946478. Its totient is φ = 90946476.

The previous prime is 90946451. The next prime is 90946543. The reversal of 90946477 is 77464909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89472681 + 1473796 = 9459^2 + 1214^2 .

It is an emirp because it is prime and its reverse (77464909) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90946477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90947477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45473238 + 45473239.

It is an arithmetic number, because the mean of its divisors is an integer number (45473239).

Almost surely, 2^90946477 is an apocalyptic number.

It is an amenable number.

90946477 is a deficient number, since it is larger than the sum of its proper divisors (1).

90946477 is an equidigital number, since it uses as much as digits as its factorization.

90946477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 90946477 is about 9536.5862340777. The cubic root of 90946477 is about 449.7059428666.

The spelling of 90946477 in words is "ninety million, nine hundred forty-six thousand, four hundred seventy-seven".