945578889 has 6 divisors (see below), whose sum is σ = 1365836186. Its totient is φ = 630385920.

The previous prime is 945578863. The next prime is 945578917. The reversal of 945578889 is 988875549.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 926289225 + 19289664 = 30435^2 + 4392^2 .

It is not a de Polignac number, because 945578889 - 2⁵ = 945578857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945578819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52532152 + ... + 52532169.

Almost surely, 2^945578889 is an apocalyptic number.

It is an amenable number.

945578889 is a deficient number, since it is larger than the sum of its proper divisors (420257297).

945578889 is a wasteful number, since it uses less digits than its factorization.

945578889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105064327 (or 105064324 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 63.

The square root of 945578889 is about 30750.2664866502. The cubic root of 945578889 is about 981.5202314459.

The spelling of 945578889 in words is "nine hundred forty-five million, five hundred seventy-eight thousand, eight hundred eighty-nine".