945989 has 4 divisors (see below), whose sum is σ = 1032000. Its totient is φ = 859980.

The previous prime is 945983. The next prime is 946003. The reversal of 945989 is 989549.

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: 989549 = 11 ⋅89959.

It is not a de Polignac number, because 945989 - 2⁸ = 945733 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 (945983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42989 + ... + 43010.

It is an arithmetic number, because the mean of its divisors is an integer number (258000).

2⁹⁴⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

945989 is a deficient number, since it is larger than the sum of its proper divisors (86011).

945989 is a wasteful number, since it uses less digits than its factorization.

945989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86010.

The product of its digits is 116640, while the sum is 44.

The square root of 945989 is about 972.6196584483. The cubic root of 945989 is about 98.1662110693.

The spelling of 945989 in words is "nine hundred forty-five thousand, nine hundred eighty-nine".