3946447 has 2 divisors, whose sum is σ = 3946448. Its totient is φ = 3946446.

The previous prime is 3946429. The next prime is 3946463. The reversal of 3946447 is 7446493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3946447 - 2¹¹ = 3944399 is a prime.

It is equal to p₂₇₉₆₇₆ and since 3946447 and 279676 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3946427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973223 + 1973224.

It is an arithmetic number, because the mean of its divisors is an integer number (1973224).

Almost surely, 2^3946447 is an apocalyptic number.

3946447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946447 is an equidigital number, since it uses as much as digits as its factorization.

3946447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 3946447 is about 1986.5666361841. The cubic root of 3946447 is about 158.0285025757.

The spelling of 3946447 in words is "three million, nine hundred forty-six thousand, four hundred forty-seven".