9149149 has 2 divisors, whose sum is σ = 9149150. Its totient is φ = 9149148.

The previous prime is 9149143. The next prime is 9149167. The reversal of 9149149 is 9419419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6853924 + 2295225 = 2618^2 + 1515^2 .

It is an emirp because it is prime and its reverse (9419419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9149149 - 2³ = 9149141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9149141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4574574 + 4574575.

It is an arithmetic number, because the mean of its divisors is an integer number (4574575).

Almost surely, 2^9149149 is an apocalyptic number.

It is an amenable number.

9149149 is a deficient number, since it is larger than the sum of its proper divisors (1).

9149149 is an equidigital number, since it uses as much as digits as its factorization.

9149149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 37.

The square root of 9149149 is about 3024.7560232191. The cubic root of 9149149 is about 209.1511387410.

It can be divided in two parts, 9 and 149149, that multiplied together give a triangular number (1342341 = T₁₆₃₈).

The spelling of 9149149 in words is "nine million, one hundred forty-nine thousand, one hundred forty-nine".