3959651 has 2 divisors, whose sum is σ = 3959652. Its totient is φ = 3959650.

The previous prime is 3959591. The next prime is 3959653. The reversal of 3959651 is 1569593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3959651 - 2⁶ = 3959587 is a prime.

Together with 3959653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3959653) 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, 1979825 + 1979826.

It is an arithmetic number, because the mean of its divisors is an integer number (1979826).

Almost surely, 2^3959651 is an apocalyptic number.

3959651 is a deficient number, since it is larger than the sum of its proper divisors (1).

3959651 is an equidigital number, since it uses as much as digits as its factorization.

3959651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36450, while the sum is 38.

The square root of 3959651 is about 1989.8871827317. The cubic root of 3959651 is about 158.2045500046.

The spelling of 3959651 in words is "three million, nine hundred fifty-nine thousand, six hundred fifty-one".