3405780549 has 12 divisors (see below), whose sum is σ = 4920633900. Its totient is φ = 2269978944.

The previous prime is 3405780523. The next prime is 3405780569. The reversal of 3405780549 is 9450875043.

3405780549 is a `hidden beast` number, since 34 + 0 + 5 + 78 + 0 + 549 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 160199649 + 3245580900 = 12657^2 + 56970^2 .

It is not a de Polignac number, because 3405780549 - 2²³ = 3397391941 is a prime.

It is a super-2 number, since 2×3405780549² = 23198682295893482802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405780509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3234 + ... + 82595.

It is an arithmetic number, because the mean of its divisors is an integer number (410052825).

Almost surely, 2^3405780549 is an apocalyptic number.

It is an amenable number.

3405780549 is a deficient number, since it is larger than the sum of its proper divisors (1514853351).

3405780549 is a wasteful number, since it uses less digits than its factorization.

3405780549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90244 (or 90241 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 3405780549 is about 58359.0656967707. The cubic root of 3405780549 is about 1504.5462882545.

The spelling of 3405780549 in words is "three billion, four hundred five million, seven hundred eighty thousand, five hundred forty-nine".