548740404 has 18 divisors (see below), whose sum is σ = 1387093890. Its totient is φ = 182913456.

The previous prime is 548740403. The next prime is 548740459. The reversal of 548740404 is 404047845.

548740404 is a `hidden beast` number, since 548 + 74 + 0 + 40 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 365192100 + 183548304 = 19110^2 + 13548^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×548740404² = 602232061964166432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 15242789 = 548740404 / (5 + 4 + 8 + 7 + 4 + 0 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548740403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7621359 + ... + 7621430.

Almost surely, 2^548740404 is an apocalyptic number.

It is an amenable number.

548740404 is an abundant number, since it is smaller than the sum of its proper divisors (838353486).

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

548740404 is a wasteful number, since it uses less digits than its factorization.

548740404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15242799 (or 15242794 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 548740404 is about 23425.2087290594. The cubic root of 548740404 is about 818.6953296130.

The spelling of 548740404 in words is "five hundred forty-eight million, seven hundred forty thousand, four hundred four".