3971099 has 12 divisors (see below), whose sum is σ = 4487952. Its totient is φ = 3508560.

The previous prime is 3971087. The next prime is 3971117. The reversal of 3971099 is 9901793.

It is a happy number.

3971099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-3971099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4034 + ... + 4920.

It is an arithmetic number, because the mean of its divisors is an integer number (373996).

Almost surely, 2^3971099 is an apocalyptic number.

3971099 is a deficient number, since it is larger than the sum of its proper divisors (516853).

3971099 is a wasteful number, since it uses less digits than its factorization.

3971099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 3971099 is about 1992.7616515780. The cubic root of 3971099 is about 158.3568684006.

The spelling of 3971099 in words is "three million, nine hundred seventy-one thousand, ninety-nine".