3970291 has 4 divisors (see below), whose sum is σ = 4275712. Its totient is φ = 3664872.

The previous prime is 3970289. The next prime is 3970313. The reversal of 3970291 is 1920793.

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

It is a cyclic number.

It is not a de Polignac number, because 3970291 - 2¹ = 3970289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3970261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152691 + ... + 152716.

It is an arithmetic number, because the mean of its divisors is an integer number (1068928).

Almost surely, 2^3970291 is an apocalyptic number.

3970291 is a deficient number, since it is larger than the sum of its proper divisors (305421).

3970291 is a wasteful number, since it uses less digits than its factorization.

3970291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305420.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 3970291 is about 1992.5589075357. The cubic root of 3970291 is about 158.3461273749.

It can be divided in two parts, 39702 and 91, that added together give a palindrome (39793).

The spelling of 3970291 in words is "three million, nine hundred seventy thousand, two hundred ninety-one".