3985397 has 8 divisors (see below), whose sum is σ = 4331544. Its totient is φ = 3644928.

The previous prime is 3985393. The next prime is 3985403. The reversal of 3985397 is 7935893.

It can be written as a sum of positive squares in 4 ways, for example, as 167281 + 3818116 = 409^2 + 1954^2 .

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

It is not a de Polignac number, because 3985397 - 2² = 3985393 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 (3985393) 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, 113 + ... + 2825.

It is an arithmetic number, because the mean of its divisors is an integer number (541443).

Almost surely, 2^3985397 is an apocalyptic number.

It is an amenable number.

3985397 is a deficient number, since it is larger than the sum of its proper divisors (346147).

3985397 is a wasteful number, since it uses less digits than its factorization.

3985397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839.

The product of its digits is 204120, while the sum is 44.

The square root of 3985397 is about 1996.3459119101. The cubic root of 3985397 is about 158.5466961632.

The spelling of 3985397 in words is "three million, nine hundred eighty-five thousand, three hundred ninety-seven".