3867997 has 8 divisors (see below), whose sum is σ = 4465152. Its totient is φ = 3282000.

The previous prime is 3867961. The next prime is 3868003. The reversal of 3867997 is 7997683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3867997 is a prime.

It is a super-2 number, since 2×3867997² = 29922801584018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3867997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867937) 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, 2029 + ... + 3442.

It is an arithmetic number, because the mean of its divisors is an integer number (558144).

Almost surely, 2^3867997 is an apocalyptic number.

It is an amenable number.

3867997 is a deficient number, since it is larger than the sum of its proper divisors (597155).

3867997 is a wasteful number, since it uses less digits than its factorization.

3867997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579.

The product of its digits is 571536, while the sum is 49.

The square root of 3867997 is about 1966.7224003402. The cubic root of 3867997 is about 156.9743558261.

The spelling of 3867997 in words is "three million, eight hundred sixty-seven thousand, nine hundred ninety-seven".