1159947 has 8 divisors (see below), whose sum is σ = 1718480. Its totient is φ = 773280.

The previous prime is 1159919. The next prime is 1159967. The reversal of 1159947 is 7499511.

It is not a de Polignac number, because 1159947 - 2¹⁰ = 1158923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1159967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21454 + ... + 21507.

It is an arithmetic number, because the mean of its divisors is an integer number (214810).

2^1159947 is an apocalyptic number.

1159947 is a deficient number, since it is larger than the sum of its proper divisors (558533).

1159947 is an equidigital number, since it uses as much as digits as its factorization.

1159947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42970 (or 42964 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 1159947 is about 1077.0083565135. The cubic root of 1159947 is about 105.0701571947.

The spelling of 1159947 in words is "one million, one hundred fifty-nine thousand, nine hundred forty-seven".