149549249 has 2 divisors, whose sum is σ = 149549250. Its totient is φ = 149549248.

The previous prime is 149549173. The next prime is 149549261. The reversal of 149549249 is 942945941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110923024 + 38626225 = 10532^2 + 6215^2 .

It is a cyclic number.

It is not a de Polignac number, because 149549249 - 2¹² = 149545153 is a prime.

It is not a weakly prime, because it can be changed into another prime (149549849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74774624 + 74774625.

It is an arithmetic number, because the mean of its divisors is an integer number (74774625).

Almost surely, 2^149549249 is an apocalyptic number.

It is an amenable number.

149549249 is a deficient number, since it is larger than the sum of its proper divisors (1).

149549249 is an equidigital number, since it uses as much as digits as its factorization.

149549249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 47.

The square root of 149549249 is about 12229.0330361807. The cubic root of 149549249 is about 530.7965345812.

The spelling of 149549249 in words is "one hundred forty-nine million, five hundred forty-nine thousand, two hundred forty-nine".