549959400 has 72 divisors (see below), whose sum is σ = 1846953030. Its totient is φ = 146655360.

The previous prime is 549959381. The next prime is 549959407. The reversal of 549959400 is 4959945.

549959400 is a `hidden beast` number, since 54 + 9 + 9 + 594 + 0 + 0 = 666.

549959400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 242798724 + 307160676 = 15582^2 + 17526^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (549959407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 150967 + ... + 154566.

Almost surely, 2^549959400 is an apocalyptic number.

549959400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

549959400 is an abundant number, since it is smaller than the sum of its proper divisors (1296993630).

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

549959400 is a wasteful number, since it uses less digits than its factorization.

549959400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305555 (or 305543 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 549959400 is about 23451.2131882340. The cubic root of 549959400 is about 819.3011098357.

The spelling of 549959400 in words is "five hundred forty-nine million, nine hundred fifty-nine thousand, four hundred".