549767946 has 64 divisors (see below), whose sum is σ = 1380960000. Its totient is φ = 144986688.

The previous prime is 549767923. The next prime is 549767951. The reversal of 549767946 is 649767945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16480 + ... + 37028.

It is an arithmetic number, because the mean of its divisors is an integer number (21577500).

Almost surely, 2^549767946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549767946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690480000).

549767946 is an abundant number, since it is smaller than the sum of its proper divisors (831192054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549767946 is a wasteful number, since it uses less digits than its factorization.

549767946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20588 (or 20574 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 57.

The square root of 549767946 is about 23447.1308692556. The cubic root of 549767946 is about 819.2060260409.

Subtracting 549767946 from its reverse (649767945), we obtain a palindrome (99999999).

The spelling of 549767946 in words is "five hundred forty-nine million, seven hundred sixty-seven thousand, nine hundred forty-six".