104802409 has 2 divisors, whose sum is σ = 104802410. Its totient is φ = 104802408.

The previous prime is 104802371. The next prime is 104802431. The reversal of 104802409 is 904208401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85618009 + 19184400 = 9253^2 + 4380^2 .

It is a cyclic number.

It is not a de Polignac number, because 104802409 - 2¹⁵ = 104769641 is a prime.

It is equal to p_6021973 and since 104802409 and 6021973 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 (104802469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52401204 + 52401205.

It is an arithmetic number, because the mean of its divisors is an integer number (52401205).

Almost surely, 2^104802409 is an apocalyptic number.

It is an amenable number.

104802409 is a deficient number, since it is larger than the sum of its proper divisors (1).

104802409 is an equidigital number, since it uses as much as digits as its factorization.

104802409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 104802409 is about 10237.3047722533. The cubic root of 104802409 is about 471.4732839965.

The spelling of 104802409 in words is "one hundred four million, eight hundred two thousand, four hundred nine".