149497309 has 16 divisors (see below), whose sum is σ = 170150400. Its totient is φ = 130306176.

The previous prime is 149497289. The next prime is 149497321. The reversal of 149497309 is 903794941.

It is not a de Polignac number, because 149497309 - 2⁷ = 149497181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149497379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20457 + ... + 26785.

It is an arithmetic number, because the mean of its divisors is an integer number (10634400).

Almost surely, 2^149497309 is an apocalyptic number.

It is an amenable number.

149497309 is a deficient number, since it is larger than the sum of its proper divisors (20653091).

149497309 is a wasteful number, since it uses less digits than its factorization.

149497309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 149497309 is about 12226.9092169689. The cubic root of 149497309 is about 530.7350770913.

The spelling of 149497309 in words is "one hundred forty-nine million, four hundred ninety-seven thousand, three hundred nine".