945989549 has 4 divisors (see below), whose sum is σ = 960108864. Its totient is φ = 931870236.

The previous prime is 945989509. The next prime is 945989621.

945989549 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 945989549 - 2²⁸ = 677554093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 945989491 and 945989500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945989509) 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, 7059557 + ... + 7059690.

It is an arithmetic number, because the mean of its divisors is an integer number (240027216).

Almost surely, 2^945989549 is an apocalyptic number.

It is an amenable number.

945989549 is a deficient number, since it is larger than the sum of its proper divisors (14119315).

945989549 is a wasteful number, since it uses less digits than its factorization.

945989549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14119314.

The product of its digits is 20995200, while the sum is 62.

The square root of 945989549 is about 30756.9431023306. The cubic root of 945989549 is about 981.6623005940.

The spelling of 945989549 in words is "nine hundred forty-five million, nine hundred eighty-nine thousand, five hundred forty-nine".