3997653 has 24 divisors (see below), whose sum is σ = 6105120. Its totient is φ = 2307360.

The previous prime is 3997649. The next prime is 3997673. The reversal of 3997653 is 3567993.

It is not a de Polignac number, because 3997653 - 2² = 3997649 is a prime.

3997653 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17343 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (254380).

Almost surely, 2^3997653 is an apocalyptic number.

3997653 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3997653 is a deficient number, since it is larger than the sum of its proper divisors (2107467).

3997653 is a wasteful number, since it uses less digits than its factorization.

3997653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 266 counting only the distinct ones).

The product of its digits is 153090, while the sum is 42.

The square root of 3997653 is about 1999.4131639058. The cubic root of 3997653 is about 158.7090522037.

The spelling of 3997653 in words is "three million, nine hundred ninety-seven thousand, six hundred fifty-three".