416777409889 has 3 divisors (see below), whose sum is σ = 416778055473. Its totient is φ = 416776764306.

The previous prime is 416777409883. The next prime is 416777409899. The reversal of 416777409889 is 988904777614.

The square root of 416777409889 is 645583.

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 is not a de Polignac number, because 416777409889 - 2¹³ = 416777401697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416777409883) 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, 322792 + ... + 968374.

It is an arithmetic number, because the mean of its divisors is an integer number (138926018491).

Almost surely, 2^416777409889 is an apocalyptic number.

416777409889 is the 645583-rd square number.

416777409889 is the 322792-nd centered octagonal number.

It is an amenable number.

416777409889 is a deficient number, since it is larger than the sum of its proper divisors (645584).

416777409889 is an frugal number, since it uses more digits than its factorization.

416777409889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291166 (or 645583 counting only the distinct ones).

The product of its (nonzero) digits is 170698752, while the sum is 70.

The spelling of 416777409889 in words is "four hundred sixteen billion, seven hundred seventy-seven million, four hundred nine thousand, eight hundred eighty-nine".