3970591 has 2 divisors, whose sum is σ = 3970592. Its totient is φ = 3970590.

The previous prime is 3970583. The next prime is 3970633. The reversal of 3970591 is 1950793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3970591 - 2³ = 3970583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3970531) 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 as a sum of consecutive naturals, namely, 1985295 + 1985296.

It is an arithmetic number, because the mean of its divisors is an integer number (1985296).

Almost surely, 2^3970591 is an apocalyptic number.

3970591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3970591 is an equidigital number, since it uses as much as digits as its factorization.

3970591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 3970591 is about 1992.6341861968. The cubic root of 3970591 is about 158.3501155495.

The spelling of 3970591 in words is "three million, nine hundred seventy thousand, five hundred ninety-one".