3549040340 has 24 divisors (see below), whose sum is σ = 7479902472. Its totient is φ = 1414488960.

The previous prime is 3549040289. The next prime is 3549040351. The reversal of 3549040340 is 430409453.

It can be written as a sum of positive squares in 4 ways, for example, as 217156 + 3548823184 = 466^2 + 59572^2 .

It is a super-3 number, since 3×3549040340³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3549040297 and 3549040306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314771 + ... + 325850.

It is an arithmetic number, because the mean of its divisors is an integer number (311662603).

Almost surely, 2^3549040340 is an apocalyptic number.

It is an amenable number.

3549040340 is an abundant number, since it is smaller than the sum of its proper divisors (3930862132).

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

3549040340 is a wasteful number, since it uses less digits than its factorization.

3549040340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640907 (or 640905 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 3549040340 is about 59573.8226069135. The cubic root of 3549040340 is about 1525.3528292282.

Adding to 3549040340 its reverse (430409453), we get a palindrome (3979449793).

The spelling of 3549040340 in words is "three billion, five hundred forty-nine million, forty thousand, three hundred forty".