90417077 has 2 divisors, whose sum is σ = 90417078. Its totient is φ = 90417076.

The previous prime is 90417073. The next prime is 90417091. The reversal of 90417077 is 77071409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61246276 + 29170801 = 7826^2 + 5401^2 .

It is a cyclic number.

It is not a de Polignac number, because 90417077 - 2² = 90417073 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90417073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45208538 + 45208539.

It is an arithmetic number, because the mean of its divisors is an integer number (45208539).

Almost surely, 2^90417077 is an apocalyptic number.

It is an amenable number.

90417077 is a deficient number, since it is larger than the sum of its proper divisors (1).

90417077 is an equidigital number, since it uses as much as digits as its factorization.

90417077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 90417077 is about 9508.7894602836. The cubic root of 90417077 is about 448.8316639216.

The spelling of 90417077 in words is "ninety million, four hundred seventeen thousand, seventy-seven".