91384633 has 2 divisors, whose sum is σ = 91384634. Its totient is φ = 91384632.

The previous prime is 91384609. The next prime is 91384663. The reversal of 91384633 is 33648319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88115769 + 3268864 = 9387^2 + 1808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91384633 is a prime.

It is a super-2 number, since 2×91384633² = 16702302297089378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91384592 and 91384601.

It is not a weakly prime, because it can be changed into another prime (91384663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45692316 + 45692317.

It is an arithmetic number, because the mean of its divisors is an integer number (45692317).

Almost surely, 2^91384633 is an apocalyptic number.

It is an amenable number.

91384633 is a deficient number, since it is larger than the sum of its proper divisors (1).

91384633 is an equidigital number, since it uses as much as digits as its factorization.

91384633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 91384633 is about 9559.5310031403. The cubic root of 91384633 is about 450.4269741692.

The spelling of 91384633 in words is "ninety-one million, three hundred eighty-four thousand, six hundred thirty-three".