90423077 has 2 divisors, whose sum is σ = 90423078. Its totient is φ = 90423076.

The previous prime is 90423059. The next prime is 90423083. The reversal of 90423077 is 77032409.

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., 71334916 + 19088161 = 8446^2 + 4369^2 .

It is a cyclic number.

It is not a de Polignac number, because 90423077 - 2¹⁰ = 90422053 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 (90423007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45211538 + 45211539.

It is an arithmetic number, because the mean of its divisors is an integer number (45211539).

Almost surely, 2^90423077 is an apocalyptic number.

It is an amenable number.

90423077 is a deficient number, since it is larger than the sum of its proper divisors (1).

90423077 is an equidigital number, since it uses as much as digits as its factorization.

90423077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 90423077 is about 9509.1049526230. The cubic root of 90423077 is about 448.8415917306.

The spelling of 90423077 in words is "ninety million, four hundred twenty-three thousand, seventy-seven".