3973865 has 8 divisors (see below), whose sum is σ = 5449920. Its totient is φ = 2724912.

The previous prime is 3973861. The next prime is 3973877. The reversal of 3973865 is 5683793.

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

It is a cyclic number.

It is not a de Polignac number, because 3973865 - 2² = 3973861 is a prime.

It is a d-powerful number, because it can be written as 3² + 9 + 7⁵ + 3¹¹ + 8⁷ + 6⁸ + 5⁵ .

It is not an unprimeable number, because it can be changed into a prime (3973861) 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, 56735 + ... + 56804.

It is an arithmetic number, because the mean of its divisors is an integer number (681240).

Almost surely, 2^3973865 is an apocalyptic number.

3973865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3973865 is a deficient number, since it is larger than the sum of its proper divisors (1476055).

3973865 is a wasteful number, since it uses less digits than its factorization.

3973865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113551.

The product of its digits is 136080, while the sum is 41.

The square root of 3973865 is about 1993.4555425191. The cubic root of 3973865 is about 158.3936267757.

The spelling of 3973865 in words is "three million, nine hundred seventy-three thousand, eight hundred sixty-five".