149444309 has 4 divisors (see below), whose sum is σ = 170793504. Its totient is φ = 128095116.

The previous prime is 149444299. The next prime is 149444333. The reversal of 149444309 is 903444941.

It is a happy number.

149444309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149444309 - 2⁴ = 149444293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149444209) 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, 10674587 + ... + 10674600.

It is an arithmetic number, because the mean of its divisors is an integer number (42698376).

Almost surely, 2^149444309 is an apocalyptic number.

It is an amenable number.

149444309 is a deficient number, since it is larger than the sum of its proper divisors (21349195).

149444309 is an equidigital number, since it uses as much as digits as its factorization.

149444309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21349194.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 149444309 is about 12224.7416741623. The cubic root of 149444309 is about 530.6723506917.

The spelling of 149444309 in words is "one hundred forty-nine million, four hundred forty-four thousand, three hundred nine".