3946487 has 4 divisors (see below), whose sum is σ = 3957840. Its totient is φ = 3935136.

The previous prime is 3946483. The next prime is 3946489. The reversal of 3946487 is 7846493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3946487 - 2² = 3946483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5138 + ... + 5855.

It is an arithmetic number, because the mean of its divisors is an integer number (989460).

Almost surely, 2^3946487 is an apocalyptic number.

3946487 is a deficient number, since it is larger than the sum of its proper divisors (11353).

3946487 is a wasteful number, since it uses less digits than its factorization.

3946487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11352.

The product of its digits is 145152, while the sum is 41.

The square root of 3946487 is about 1986.5767037796. The cubic root of 3946487 is about 158.0290364837.

The spelling of 3946487 in words is "three million, nine hundred forty-six thousand, four hundred eighty-seven".