549293940 has 192 divisors, whose sum is σ = 1855257600. Its totient is φ = 134918784.

The previous prime is 549293893. The next prime is 549293951. The reversal of 549293940 is 49392945.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1186149 + ... + 1186611.

It is an arithmetic number, because the mean of its divisors is an integer number (9662800).

Almost surely, 2^549293940 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 549293940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927628800).

549293940 is an abundant number, since it is smaller than the sum of its proper divisors (1305963660).

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

549293940 is a wasteful number, since it uses less digits than its factorization.

549293940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 549293940 is about 23437.0207150994. The cubic root of 549293940 is about 818.9705204809.

The spelling of 549293940 in words is "five hundred forty-nine million, two hundred ninety-three thousand, nine hundred forty".