548909139 has 16 divisors (see below), whose sum is σ = 741412224. Its totient is φ = 361200000.

The previous prime is 548909087. The next prime is 548909161. The reversal of 548909139 is 931909845.

It is not a de Polignac number, because 548909139 - 2⁸ = 548908883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (548902139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81864 + ... + 88314.

It is an arithmetic number, because the mean of its divisors is an integer number (46338264).

Almost surely, 2^548909139 is an apocalyptic number.

548909139 is a deficient number, since it is larger than the sum of its proper divisors (192503085).

548909139 is a wasteful number, since it uses less digits than its factorization.

548909139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6818.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 548909139 is about 23428.8100209977. The cubic root of 548909139 is about 818.7792359546.

The spelling of 548909139 in words is "five hundred forty-eight million, nine hundred nine thousand, one hundred thirty-nine".