549369840 has 160 divisors (see below), whose sum is σ = 1758744576. Its totient is φ = 141783040.

The previous prime is 549369803. The next prime is 549369859. The reversal of 549369840 is 48963945.

It is a super-2 number, since 2×549369840² = 603614442203251200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 549369840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1274425 + ... + 1274855.

Almost surely, 2^549369840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549369840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879372288).

549369840 is an abundant number, since it is smaller than the sum of its proper divisors (1209374736).

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

549369840 is a wasteful number, since it uses less digits than its factorization.

549369840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 549369840 is about 23438.6398922804. The cubic root of 549369840 is about 819.0082398118.

The spelling of 549369840 in words is "five hundred forty-nine million, three hundred sixty-nine thousand, eight hundred forty".