1447139 has 2 divisors, whose sum is σ = 1447140. Its totient is φ = 1447138.

The previous prime is 1447123. The next prime is 1447151. The reversal of 1447139 is 9317441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1447139 - 2⁴ = 1447123 is a prime.

It is a super-2 number, since 2×1447139² = 4188422570642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1447169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723569 + 723570.

It is an arithmetic number, because the mean of its divisors is an integer number (723570).

2^1447139 is an apocalyptic number.

1447139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447139 is an equidigital number, since it uses as much as digits as its factorization.

1447139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 1447139 is about 1202.9709057163. The cubic root of 1447139 is about 113.1106285987.

The spelling of 1447139 in words is "one million, four hundred forty-seven thousand, one hundred thirty-nine".