3549369949 has 2 divisors, whose sum is σ = 3549369950. Its totient is φ = 3549369948.

The previous prime is 3549369899. The next prime is 3549369953. The reversal of 3549369949 is 9499639453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2833432900 + 715937049 = 53230^2 + 26757^2 .

It is an emirp because it is prime and its reverse (9499639453) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3549369949 - 2¹¹ = 3549367901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3549339949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1774684974 + 1774684975.

It is an arithmetic number, because the mean of its divisors is an integer number (1774684975).

Almost surely, 2^3549369949 is an apocalyptic number.

It is an amenable number.

3549369949 is a deficient number, since it is larger than the sum of its proper divisors (1).

3549369949 is an equidigital number, since it uses as much as digits as its factorization.

3549369949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28343520, while the sum is 61.

The square root of 3549369949 is about 59576.5889339093. The cubic root of 3549369949 is about 1525.4000489842.

The spelling of 3549369949 in words is "three billion, five hundred forty-nine million, three hundred sixty-nine thousand, nine hundred forty-nine".