3947967 has 8 divisors (see below), whose sum is σ = 5848880. Its totient is φ = 2631960.

The previous prime is 3947963. The next prime is 3947971. The reversal of 3947967 is 7697493.

It is an interprime number because it is at equal distance from previous prime (3947963) and next prime (3947971).

It is not a de Polignac number, because 3947967 - 2² = 3947963 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 (3947963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73084 + ... + 73137.

It is an arithmetic number, because the mean of its divisors is an integer number (731110).

Almost surely, 2^3947967 is an apocalyptic number.

3947967 is a deficient number, since it is larger than the sum of its proper divisors (1900913).

3947967 is a wasteful number, since it uses less digits than its factorization.

3947967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146230 (or 146224 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 3947967 is about 1986.9491689522. The cubic root of 3947967 is about 158.0487885437.

The spelling of 3947967 in words is "three million, nine hundred forty-seven thousand, nine hundred sixty-seven".