8931149 has 2 divisors, whose sum is σ = 8931150. Its totient is φ = 8931148.

The previous prime is 8931119. The next prime is 8931163. The reversal of 8931149 is 9411398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7941124 + 990025 = 2818^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 8931149 - 2¹⁶ = 8865613 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 (8931119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4465574 + 4465575.

It is an arithmetic number, because the mean of its divisors is an integer number (4465575).

Almost surely, 2^8931149 is an apocalyptic number.

It is an amenable number.

8931149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8931149 is an equidigital number, since it uses as much as digits as its factorization.

8931149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 8931149 is about 2988.5028024079. The cubic root of 8931149 is about 207.4765948343.

Subtracting 8931149 from its reverse (9411398), we obtain a square (480249 = 693²).

The spelling of 8931149 in words is "eight million, nine hundred thirty-one thousand, one hundred forty-nine".