945869 has 4 divisors (see below), whose sum is σ = 948000. Its totient is φ = 943740.

The previous prime is 945851. The next prime is 945881. The reversal of 945869 is 968549.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 968549 = 37 ⋅26177.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-945869 is a prime.

It is a super-2 number, since 2×945869² = 1789336330322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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 945869.

It is not an unprimeable number, because it can be changed into a prime (945809) 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 3 ways as a sum of consecutive naturals, for example, 119 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (237000).

2⁹⁴⁵⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

945869 is a deficient number, since it is larger than the sum of its proper divisors (2131).

945869 is a wasteful number, since it uses less digits than its factorization.

945869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130.

The product of its digits is 77760, while the sum is 41.

The square root of 945869 is about 972.5579674241. The cubic root of 945869 is about 98.1620600544.

The spelling of 945869 in words is "nine hundred forty-five thousand, eight hundred sixty-nine".