3946401 has 20 divisors (see below), whose sum is σ = 5976432. Its totient is φ = 2594808.

The previous prime is 3946399. The next prime is 3946403. The reversal of 3946401 is 1046493.

It is an interprime number because it is at equal distance from previous prime (3946399) and next prime (3946403).

It is not a de Polignac number, because 3946401 - 2¹ = 3946399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (3946403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6430 + ... + 7016.

Almost surely, 2^3946401 is an apocalyptic number.

It is an amenable number.

3946401 is a deficient number, since it is larger than the sum of its proper divisors (2030031).

3946401 is an equidigital number, since it uses as much as digits as its factorization.

3946401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3946401 is about 1986.5550583863. Note that the first 3 decimals coincide. The cubic root of 3946401 is about 158.0278885771.

The spelling of 3946401 in words is "three million, nine hundred forty-six thousand, four hundred one".