104891249 has 2 divisors, whose sum is σ = 104891250. Its totient is φ = 104891248.

The previous prime is 104891159. The next prime is 104891251. The reversal of 104891249 is 942198401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75134224 + 29757025 = 8668^2 + 5455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104891249 is a prime.

It is a super-3 number, since 3×104891249³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 104891251, 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 (104891299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52445624 + 52445625.

It is an arithmetic number, because the mean of its divisors is an integer number (52445625).

Almost surely, 2^104891249 is an apocalyptic number.

It is an amenable number.

104891249 is a deficient number, since it is larger than the sum of its proper divisors (1).

104891249 is an equidigital number, since it uses as much as digits as its factorization.

104891249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 104891249 is about 10241.6428857874. The cubic root of 104891249 is about 471.6064675023.

The spelling of 104891249 in words is "one hundred four million, eight hundred ninety-one thousand, two hundred forty-nine".