3995659 has 2 divisors, whose sum is σ = 3995660.
Its totient is φ = 3995658.
The previous prime is 3995653. The next prime is 3995671. The reversal of 3995659 is 9565993.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 3995659 - 25 = 3995627 is a prime.
It is not a weakly prime, because it can be changed into another prime (3995653) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997829 + 1997830.
It is an arithmetic number, because the mean of its divisors is an integer number (1997830).
Almost surely, 23995659 is an apocalyptic number.
3995659 is a deficient number, since it is larger than the sum of its proper divisors (1).
3995659 is an equidigital number, since it uses as much as digits as its factorization.
3995659 is an evil number, because the sum of its binary digits is even.
The product of its digits is 328050, while the sum is 46.
The square root of 3995659 is about 1998.9144553982.
The cubic root of 3995659 is about 158.6826601780.
The spelling of 3995659 in words is "three million, nine hundred ninety-five thousand, six hundred fifty-nine".