104390513 has 2 divisors, whose sum is σ = 104390514. Its totient is φ = 104390512.

The previous prime is 104390509. The next prime is 104390569. The reversal of 104390513 is 315093401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61199329 + 43191184 = 7823^2 + 6572^2 .

It is a cyclic number.

It is not a de Polignac number, because 104390513 - 2² = 104390509 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104390413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52195256 + 52195257.

It is an arithmetic number, because the mean of its divisors is an integer number (52195257).

Almost surely, 2^104390513 is an apocalyptic number.

It is an amenable number.

104390513 is a deficient number, since it is larger than the sum of its proper divisors (1).

104390513 is an equidigital number, since it uses as much as digits as its factorization.

104390513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 104390513 is about 10217.1675624901. The cubic root of 104390513 is about 470.8548092500.

The spelling of 104390513 in words is "one hundred four million, three hundred ninety thousand, five hundred thirteen".