3997803 has 8 divisors (see below), whose sum is σ = 5340816. Its totient is φ = 2660000.

The previous prime is 3997801. The next prime is 3997811. The reversal of 3997803 is 3087993.

It is a happy number.

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 3997803 - 2¹ = 3997801 is a prime.

It is a super-3 number, since 3×3997803³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3997801) 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, 1153 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (667602).

Almost surely, 2^3997803 is an apocalyptic number.

3997803 is a deficient number, since it is larger than the sum of its proper divisors (1343013).

3997803 is a wasteful number, since it uses less digits than its factorization.

3997803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 3997803 is about 1999.4506745604. The cubic root of 3997803 is about 158.7110372067.

The spelling of 3997803 in words is "three million, nine hundred ninety-seven thousand, eight hundred three".