149510869 has 4 divisors (see below), whose sum is σ = 158305644. Its totient is φ = 140716096.

The previous prime is 149510839. The next prime is 149510873. The reversal of 149510869 is 968015941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55323844 + 94187025 = 7438^2 + 9705^2 .

It is a cyclic number.

It is not a de Polignac number, because 149510869 - 2⁹ = 149510357 is a prime.

It is a super-2 number, since 2×149510869² = 44706999898270322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149510839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4397362 + ... + 4397395.

It is an arithmetic number, because the mean of its divisors is an integer number (39576411).

Almost surely, 2^149510869 is an apocalyptic number.

It is an amenable number.

149510869 is a deficient number, since it is larger than the sum of its proper divisors (8794775).

149510869 is an equidigital number, since it uses as much as digits as its factorization.

149510869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8794774.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 149510869 is about 12227.4637190220. The cubic root of 149510869 is about 530.7511231997.

The spelling of 149510869 in words is "one hundred forty-nine million, five hundred ten thousand, eight hundred sixty-nine".