3970213 has 4 divisors (see below), whose sum is σ = 4275628. Its totient is φ = 3664800.

The previous prime is 3970199. The next prime is 3970223. The reversal of 3970213 is 3120793.

3970213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 214369 + 3755844 = 463^2 + 1938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3970213 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 (3970223) 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 3 ways as a sum of consecutive naturals, for example, 152688 + ... + 152713.

It is an arithmetic number, because the mean of its divisors is an integer number (1068907).

Almost surely, 2^3970213 is an apocalyptic number.

It is an amenable number.

3970213 is a deficient number, since it is larger than the sum of its proper divisors (305415).

3970213 is a wasteful number, since it uses less digits than its factorization.

3970213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305414.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 3970213 is about 1992.5393346180. The cubic root of 3970213 is about 158.3450904166.

The spelling of 3970213 in words is "three million, nine hundred seventy thousand, two hundred thirteen".