1447890461 has 2 divisors, whose sum is σ = 1447890462. Its totient is φ = 1447890460.

The previous prime is 1447890443. The next prime is 1447890547. The reversal of 1447890461 is 1640987441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1144468900 + 303421561 = 33830^2 + 17419^2 .

It is a cyclic number.

It is not a de Polignac number, because 1447890461 - 2¹⁸ = 1447628317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447890161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723945230 + 723945231.

It is an arithmetic number, because the mean of its divisors is an integer number (723945231).

Almost surely, 2^1447890461 is an apocalyptic number.

It is an amenable number.

1447890461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447890461 is an equidigital number, since it uses as much as digits as its factorization.

1447890461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1447890461 is about 38051.1558431541. The cubic root of 1447890461 is about 1131.3020366324.

The spelling of 1447890461 in words is "one billion, four hundred forty-seven million, eight hundred ninety thousand, four hundred sixty-one".