3981265 has 8 divisors (see below), whose sum is σ = 4942440. Its totient is φ = 3075072.

The previous prime is 3981253. The next prime is 3981301. The reversal of 3981265 is 5621893.

It can be written as a sum of positive squares in 4 ways, for example, as 9216 + 3972049 = 96^2 + 1993^2 .

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 3981265 - 2⁷ = 3981137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3981265.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13584 + ... + 13873.

It is an arithmetic number, because the mean of its divisors is an integer number (617805).

Almost surely, 2^3981265 is an apocalyptic number.

It is an amenable number.

3981265 is a deficient number, since it is larger than the sum of its proper divisors (961175).

3981265 is a wasteful number, since it uses less digits than its factorization.

3981265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27491.

The product of its digits is 12960, while the sum is 34.

The square root of 3981265 is about 1995.3107527400. The cubic root of 3981265 is about 158.4918842684.

The spelling of 3981265 in words is "three million, nine hundred eighty-one thousand, two hundred sixty-five".