945891 has 16 divisors (see below), whose sum is σ = 1429920. Its totient is φ = 617760.

The previous prime is 945887. The next prime is 945899. The reversal of 945891 is 198549.

It is not a de Polignac number, because 945891 - 2² = 945887 is a prime.

945891 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 945891.

It is not an unprimeable number, because it can be changed into a prime (945899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101 + ... + 1761.

It is an arithmetic number, because the mean of its divisors is an integer number (89370).

2⁹⁴⁵⁸⁹¹ is an apocalyptic number.

945891 is a deficient number, since it is larger than the sum of its proper divisors (484029).

945891 is a wasteful number, since it uses less digits than its factorization.

945891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 717 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 945891 is about 972.5692777381. The cubic root of 945891 is about 98.1628211000.

The spelling of 945891 in words is "nine hundred forty-five thousand, eight hundred ninety-one".