3997071 has 24 divisors (see below), whose sum is σ = 6289920. Its totient is φ = 2431296.

The previous prime is 3997069. The next prime is 3997111. The reversal of 3997071 is 1707993.

It is not a de Polignac number, because 3997071 - 2¹ = 3997069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14725 + ... + 14993.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

Almost surely, 2^3997071 is an apocalyptic number.

3997071 is a deficient number, since it is larger than the sum of its proper divisors (2292849).

3997071 is a wasteful number, since it uses less digits than its factorization.

3997071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 36.

The square root of 3997071 is about 1999.2676159034. The cubic root of 3997071 is about 158.7013499218.

The spelling of 3997071 in words is "three million, nine hundred ninety-seven thousand, seventy-one".