3867965 has 8 divisors (see below), whose sum is σ = 4659768. Its totient is φ = 3082240.

The previous prime is 3867961. The next prime is 3868003. The reversal of 3867965 is 5697683.

It can be written as a sum of positive squares in 4 ways, for example, as 1493284 + 2374681 = 1222^2 + 1541^2 .

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

It is not a de Polignac number, because 3867965 - 2² = 3867961 is a prime.

It is a super-2 number, since 2×3867965² = 29922306482450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867961) 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, 29 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (582471).

Almost surely, 2^3867965 is an apocalyptic number.

It is an amenable number.

3867965 is a deficient number, since it is larger than the sum of its proper divisors (791803).

3867965 is a wasteful number, since it uses less digits than its factorization.

3867965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039.

The product of its digits is 272160, while the sum is 44.

The square root of 3867965 is about 1966.7142649607. The cubic root of 3867965 is about 156.9739229412.

The spelling of 3867965 in words is "three million, eight hundred sixty-seven thousand, nine hundred sixty-five".