90397 has 2 divisors, whose sum is σ = 90398. Its totient is φ = 90396.

The previous prime is 90379. The next prime is 90401. The reversal of 90397 is 79309.

Together with previous prime (90379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47961 + 42436 = 219^2 + 206^2 .

It is an emirp because it is prime and its reverse (79309) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90397 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 (90197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45198 + 45199.

It is an arithmetic number, because the mean of its divisors is an integer number (45199).

2⁹⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

90397 is a deficient number, since it is larger than the sum of its proper divisors (1).

90397 is an equidigital number, since it uses as much as digits as its factorization.

90397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 28.

The square root of 90397 is about 300.6609386003. The cubic root of 90397 is about 44.8798440624.

It can be divided in two parts, 903 and 97, that added together give a cube (1000 = 10³).

The spelling of 90397 in words is "ninety thousand, three hundred ninety-seven".