104291689 has 2 divisors, whose sum is σ = 104291690. Its totient is φ = 104291688.

The previous prime is 104291653. The next prime is 104291717. The reversal of 104291689 is 986192401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89019225 + 15272464 = 9435^2 + 3908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104291689 is a prime.

It is a super-3 number, since 3×104291689³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (104291609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52145844 + 52145845.

It is an arithmetic number, because the mean of its divisors is an integer number (52145845).

Almost surely, 2^104291689 is an apocalyptic number.

It is an amenable number.

104291689 is a deficient number, since it is larger than the sum of its proper divisors (1).

104291689 is an equidigital number, since it uses as much as digits as its factorization.

104291689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 104291689 is about 10212.3302433872. The cubic root of 104291689 is about 470.7061800130.

The spelling of 104291689 in words is "one hundred four million, two hundred ninety-one thousand, six hundred eighty-nine".