149549417 has 8 divisors (see below), whose sum is σ = 151574280. Its totient is φ = 147536640.

The previous prime is 149549401. The next prime is 149549431. The reversal of 149549417 is 714945941.

It can be written as a sum of positive squares in 4 ways, for example, as 24019801 + 125529616 = 4901^2 + 11204^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149549417 - 2⁴ = 149549401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149549447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23423 + ... + 29115.

It is an arithmetic number, because the mean of its divisors is an integer number (18946785).

Almost surely, 2^149549417 is an apocalyptic number.

It is an amenable number.

149549417 is a deficient number, since it is larger than the sum of its proper divisors (2024863).

149549417 is a wasteful number, since it uses less digits than its factorization.

149549417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043.

The product of its digits is 181440, while the sum is 44.

The square root of 149549417 is about 12229.0399050784. The cubic root of 149549417 is about 530.7967333424.

The spelling of 149549417 in words is "one hundred forty-nine million, five hundred forty-nine thousand, four hundred seventeen".