149170849 has 2 divisors, whose sum is σ = 149170850. Its totient is φ = 149170848.

The previous prime is 149170811. The next prime is 149170859. The reversal of 149170849 is 948071941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149010849 + 160000 = 12207^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 149170849 - 2⁹ = 149170337 is a prime.

It is not a weakly prime, because it can be changed into another prime (149170859) 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 as a sum of consecutive naturals, namely, 74585424 + 74585425.

It is an arithmetic number, because the mean of its divisors is an integer number (74585425).

Almost surely, 2^149170849 is an apocalyptic number.

It is an amenable number.

149170849 is a deficient number, since it is larger than the sum of its proper divisors (1).

149170849 is an equidigital number, since it uses as much as digits as its factorization.

149170849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 149170849 is about 12213.5518584890. The cubic root of 149170849 is about 530.3484702523.

The spelling of 149170849 in words is "one hundred forty-nine million, one hundred seventy thousand, eight hundred forty-nine".