3979147 has 2 divisors, whose sum is σ = 3979148. Its totient is φ = 3979146.

The previous prime is 3979141. The next prime is 3979159. The reversal of 3979147 is 7419793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3979147 - 2¹⁵ = 3946379 is a prime.

It is a super-2 number, since 2×3979147² = 31667221695218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3979141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989573 + 1989574.

It is an arithmetic number, because the mean of its divisors is an integer number (1989574).

Almost surely, 2^3979147 is an apocalyptic number.

3979147 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979147 is an equidigital number, since it uses as much as digits as its factorization.

3979147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 3979147 is about 1994.7799377375. The cubic root of 3979147 is about 158.4637738264.

The spelling of 3979147 in words is "three million, nine hundred seventy-nine thousand, one hundred forty-seven".