90382609 has 2 divisors, whose sum is σ = 90382610. Its totient is φ = 90382608.

The previous prime is 90382583. The next prime is 90382613. The reversal of 90382609 is 90628309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50339025 + 40043584 = 7095^2 + 6328^2 .

It is a cyclic number.

It is not a de Polignac number, because 90382609 - 2¹¹ = 90380561 is a prime.

It is equal to p_5237965 and since 90382609 and 5237965 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (90382679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45191304 + 45191305.

It is an arithmetic number, because the mean of its divisors is an integer number (45191305).

Almost surely, 2^90382609 is an apocalyptic number.

It is an amenable number.

90382609 is a deficient number, since it is larger than the sum of its proper divisors (1).

90382609 is an equidigital number, since it uses as much as digits as its factorization.

90382609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 90382609 is about 9506.9768591282. The cubic root of 90382609 is about 448.7746234578.

The spelling of 90382609 in words is "ninety million, three hundred eighty-two thousand, six hundred nine".