3641999 has 2 divisors, whose sum is σ = 3642000. Its totient is φ = 3641998.

The previous prime is 3641987. The next prime is 3642019. The reversal of 3641999 is 9991463.

It is a weak prime.

It is an emirp because it is prime and its reverse (9991463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3641999 - 2¹² = 3637903 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3641399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820999 + 1821000.

It is an arithmetic number, because the mean of its divisors is an integer number (1821000).

Almost surely, 2^3641999 is an apocalyptic number.

3641999 is a deficient number, since it is larger than the sum of its proper divisors (1).

3641999 is an equidigital number, since it uses as much as digits as its factorization.

3641999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 41.

The square root of 3641999 is about 1908.4022112752. The cubic root of 3641999 is about 153.8555879022.

The spelling of 3641999 in words is "three million, six hundred forty-one thousand, nine hundred ninety-nine".