3961147 has 2 divisors, whose sum is σ = 3961148. Its totient is φ = 3961146.

The previous prime is 3961121. The next prime is 3961159. The reversal of 3961147 is 7411693.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3961147 is a prime.

3961147 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3961847) 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, 1980573 + 1980574.

It is an arithmetic number, because the mean of its divisors is an integer number (1980574).

Almost surely, 2^3961147 is an apocalyptic number.

3961147 is a deficient number, since it is larger than the sum of its proper divisors (1).

3961147 is an equidigital number, since it uses as much as digits as its factorization.

3961147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 3961147 is about 1990.2630479412. The cubic root of 3961147 is about 158.2244713064.

The spelling of 3961147 in words is "three million, nine hundred sixty-one thousand, one hundred forty-seven".