104137409 has 2 divisors, whose sum is σ = 104137410. Its totient is φ = 104137408.

The previous prime is 104137403. The next prime is 104137433. The reversal of 104137409 is 904731401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82719025 + 21418384 = 9095^2 + 4628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104137409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104137403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52068704 + 52068705.

It is an arithmetic number, because the mean of its divisors is an integer number (52068705).

Almost surely, 2^104137409 is an apocalyptic number.

It is an amenable number.

104137409 is a deficient number, since it is larger than the sum of its proper divisors (1).

104137409 is an equidigital number, since it uses as much as digits as its factorization.

104137409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 104137409 is about 10204.7738338485. The cubic root of 104137409 is about 470.4739582860.

The spelling of 104137409 in words is "one hundred four million, one hundred thirty-seven thousand, four hundred nine".