889356505249 has 3 divisors (see below), whose sum is σ = 889357448307. Its totient is φ = 889355562192.

The previous prime is 889356505241. The next prime is 889356505283. The reversal of 889356505249 is 942505653988.

The square root of 889356505249 is 943057.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 873972568225 + 15383937024 = 934865^2 + 124032^2 .

It is not a de Polignac number, because 889356505249 - 2³ = 889356505241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889356505241) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 471529 + ... + 1414585.

It is an arithmetic number, because the mean of its divisors is an integer number (296452482769).

Almost surely, 2^889356505249 is an apocalyptic number.

889356505249 is the 943057-th square number.

889356505249 is the 471529-th centered octagonal number.

It is an amenable number.

889356505249 is a deficient number, since it is larger than the sum of its proper divisors (943058).

889356505249 is an frugal number, since it uses more digits than its factorization.

889356505249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886114 (or 943057 counting only the distinct ones).

The product of its (nonzero) digits is 93312000, while the sum is 64.

Multiplying 889356505249 by its sum of digits (64), we get a square (56918816335936 = 7544456²).

The spelling of 889356505249 in words is "eight hundred eighty-nine billion, three hundred fifty-six million, five hundred five thousand, two hundred forty-nine".