90258977 has 2 divisors, whose sum is σ = 90258978. Its totient is φ = 90258976.

The previous prime is 90258937. The next prime is 90258979. The reversal of 90258977 is 77985209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81072016 + 9186961 = 9004^2 + 3031^2 .

It is an emirp because it is prime and its reverse (77985209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90258977 - 2¹² = 90254881 is a prime.

Together with 90258979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90258979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45129488 + 45129489.

It is an arithmetic number, because the mean of its divisors is an integer number (45129489).

Almost surely, 2^90258977 is an apocalyptic number.

It is an amenable number.

90258977 is a deficient number, since it is larger than the sum of its proper divisors (1).

90258977 is an equidigital number, since it uses as much as digits as its factorization.

90258977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 90258977 is about 9500.4724619358. The cubic root of 90258977 is about 448.5699077425.

The spelling of 90258977 in words is "ninety million, two hundred fifty-eight thousand, nine hundred seventy-seven".