981447 has 12 divisors (see below), whose sum is σ = 1358760. Its totient is φ = 630112.

The previous prime is 981443. The next prime is 981451. The reversal of 981447 is 744189.

It is an interprime number because it is at equal distance from previous prime (981443) and next prime (981451).

It is not a de Polignac number, because 981447 - 2² = 981443 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981447.

It is not an unprimeable number, because it can be changed into a prime (981443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2329 + ... + 2717.

It is an arithmetic number, because the mean of its divisors is an integer number (113230).

2⁹⁸¹⁴⁴⁷ is an apocalyptic number.

981447 is a deficient number, since it is larger than the sum of its proper divisors (377313).

981447 is a wasteful number, since it uses less digits than its factorization.

981447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 421 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 981447 is about 990.6800694472. The cubic root of 981447 is about 99.3777021535.

The spelling of 981447 in words is "nine hundred eighty-one thousand, four hundred forty-seven".