1145947 has 8 divisors (see below), whose sum is σ = 1316160. Its totient is φ = 986760.

The previous prime is 1145899. The next prime is 1145971. The reversal of 1145947 is 7495411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145747) 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, 2533 + ... + 2950.

It is an arithmetic number, because the mean of its divisors is an integer number (164520).

2^1145947 is an apocalyptic number.

1145947 is a deficient number, since it is larger than the sum of its proper divisors (170213).

1145947 is a wasteful number, since it uses less digits than its factorization.

1145947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513.

The product of its digits is 5040, while the sum is 31.

The square root of 1145947 is about 1070.4891405334. The cubic root of 1145947 is about 104.6457296936.

The spelling of 1145947 in words is "one million, one hundred forty-five thousand, nine hundred forty-seven".