3966407 has 2 divisors, whose sum is σ = 3966408. Its totient is φ = 3966406.

The previous prime is 3966349. The next prime is 3966409. The reversal of 3966407 is 7046693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3966407 - 2¹⁰ = 3965383 is a prime.

Together with 3966409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3966409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983203 + 1983204.

It is an arithmetic number, because the mean of its divisors is an integer number (1983204).

Almost surely, 2^3966407 is an apocalyptic number.

3966407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3966407 is an equidigital number, since it uses as much as digits as its factorization.

3966407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 3966407 is about 1991.5840429166. The cubic root of 3966407 is about 158.2944756599.

The spelling of 3966407 in words is "three million, nine hundred sixty-six thousand, four hundred seven".