13770149 has 2 divisors, whose sum is σ = 13770150. Its totient is φ = 13770148.

The previous prime is 13770131. The next prime is 13770161. The reversal of 13770149 is 94107731.

13770149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 4919524 = 2975^2 + 2218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13770149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13770199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6885074 + 6885075.

It is an arithmetic number, because the mean of its divisors is an integer number (6885075).

Almost surely, 2^13770149 is an apocalyptic number.

It is an amenable number.

13770149 is a deficient number, since it is larger than the sum of its proper divisors (1).

13770149 is an equidigital number, since it uses as much as digits as its factorization.

13770149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 13770149 is about 3710.8151395617. The cubic root of 13770149 is about 239.6879567318.

The spelling of 13770149 in words is "thirteen million, seven hundred seventy thousand, one hundred forty-nine".