149744169 has 9 divisors (see below), whose sum is σ = 216350173. Its totient is φ = 99804972.

The previous prime is 149744137. The next prime is 149744173. The reversal of 149744169 is 961447941.

The square root of 149744169 is 12237.

It is a perfect power (a square), and thus also a powerful number.

149744169 is a `hidden beast` number, since 149 + 7 + 441 + 69 = 666.

149744169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 149744169 - 2⁵ = 149744137 is a prime.

It is a super-2 number, since 2×149744169² = 44846632299001122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149744269) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34672 + ... + 38750.

Almost surely, 2^149744169 is an apocalyptic number.

149744169 is the 12237-th square number.

149744169 is the 6119-th centered octagonal number.

It is an amenable number.

149744169 is a deficient number, since it is larger than the sum of its proper divisors (66606004).

149744169 is an frugal number, since it uses more digits than its factorization.

149744169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164 (or 4082 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The cubic root of 149744169 is about 531.0270449162.

The spelling of 149744169 in words is "one hundred forty-nine million, seven hundred forty-four thousand, one hundred sixty-nine".