549329139 has 12 divisors (see below), whose sum is σ = 801656856. Its totient is φ = 362443392.

The previous prime is 549329113. The next prime is 549329147. The reversal of 549329139 is 931923945.

549329139 is a `hidden beast` number, since 5 + 493 + 29 + 139 = 666.

549329139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 549329139 - 2²¹ = 547231987 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 549329094 and 549329103.

It is not an unprimeable number, because it can be changed into a prime (549329189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313749 + ... + 315494.

It is an arithmetic number, because the mean of its divisors is an integer number (66804738).

Almost surely, 2^549329139 is an apocalyptic number.

549329139 is a deficient number, since it is larger than the sum of its proper divisors (252327717).

549329139 is a wasteful number, since it uses less digits than its factorization.

549329139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629346 (or 629343 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 549329139 is about 23437.7716304260. The cubic root of 549329139 is about 818.9880134390.

The spelling of 549329139 in words is "five hundred forty-nine million, three hundred twenty-nine thousand, one hundred thirty-nine".