1447890071 has 2 divisors, whose sum is σ = 1447890072. Its totient is φ = 1447890070.

The previous prime is 1447890049. The next prime is 1447890077. The reversal of 1447890071 is 1700987441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1447890071 - 2¹⁸ = 1447627927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447890077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723945035 + 723945036.

It is an arithmetic number, because the mean of its divisors is an integer number (723945036).

Almost surely, 2^1447890071 is an apocalyptic number.

1447890071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447890071 is an equidigital number, since it uses as much as digits as its factorization.

1447890071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 1447890071 is about 38051.1507184737. The cubic root of 1447890071 is about 1131.3019350575.

The spelling of 1447890071 in words is "one billion, four hundred forty-seven million, eight hundred ninety thousand, seventy-one".