90941777 has 2 divisors, whose sum is σ = 90941778. Its totient is φ = 90941776.

The previous prime is 90941759. The next prime is 90941791. The reversal of 90941777 is 77714909.

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., 68293696 + 22648081 = 8264^2 + 4759^2 .

It is a cyclic number.

It is not a de Polignac number, because 90941777 - 2¹⁰ = 90940753 is a prime.

It is not a weakly prime, because it can be changed into another prime (90941707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45470888 + 45470889.

It is an arithmetic number, because the mean of its divisors is an integer number (45470889).

Almost surely, 2^90941777 is an apocalyptic number.

It is an amenable number.

90941777 is a deficient number, since it is larger than the sum of its proper divisors (1).

90941777 is an equidigital number, since it uses as much as digits as its factorization.

90941777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 90941777 is about 9536.3398114790. The cubic root of 90941777 is about 449.6981959866.

The spelling of 90941777 in words is "ninety million, nine hundred forty-one thousand, seven hundred seventy-seven".