396165559 has 2 divisors, whose sum is σ = 396165560. Its totient is φ = 396165558.

The previous prime is 396165551. The next prime is 396165577. The reversal of 396165559 is 955561693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396165559 - 2³ = 396165551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396165551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198082779 + 198082780.

It is an arithmetic number, because the mean of its divisors is an integer number (198082780).

Almost surely, 2^396165559 is an apocalyptic number.

396165559 is a deficient number, since it is larger than the sum of its proper divisors (1).

396165559 is an equidigital number, since it uses as much as digits as its factorization.

396165559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1093500, while the sum is 49.

The square root of 396165559 is about 19903.9081338314. The cubic root of 396165559 is about 734.4443694338. Note that the first 3 decimals are identical.

The spelling of 396165559 in words is "three hundred ninety-six million, one hundred sixty-five thousand, five hundred fifty-nine".