1971047 has 12 divisors (see below), whose sum is σ = 2174040. Its totient is φ = 1785888.

The previous prime is 1971029. The next prime is 1971049. The reversal of 1971047 is 7401791.

It is not a de Polignac number, because 1971047 - 2⁸ = 1970791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971049) 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, 18029 + ... + 18137.

It is an arithmetic number, because the mean of its divisors is an integer number (181170).

2^1971047 is an apocalyptic number.

1971047 is a deficient number, since it is larger than the sum of its proper divisors (202993).

1971047 is a wasteful number, since it uses less digits than its factorization.

1971047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 1971047 is about 1403.9398135248. The cubic root of 1971047 is about 125.3811724789.

The spelling of 1971047 in words is "one million, nine hundred seventy-one thousand, forty-seven".