396581099 has 2 divisors, whose sum is σ = 396581100. Its totient is φ = 396581098.

The previous prime is 396581077. The next prime is 396581113. The reversal of 396581099 is 990185693.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396581099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (396584099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198290549 + 198290550.

It is an arithmetic number, because the mean of its divisors is an integer number (198290550).

Almost surely, 2^396581099 is an apocalyptic number.

396581099 is a deficient number, since it is larger than the sum of its proper divisors (1).

396581099 is an equidigital number, since it uses as much as digits as its factorization.

396581099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 396581099 is about 19914.3440514620. The cubic root of 396581099 is about 734.7010671393.

The spelling of 396581099 in words is "three hundred ninety-six million, five hundred eighty-one thousand, ninety-nine".