149348309 has 4 divisors (see below), whose sum is σ = 162925440. Its totient is φ = 135771180.

The previous prime is 149348273. The next prime is 149348321. The reversal of 149348309 is 903843941.

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 149348309 - 2¹⁶ = 149282773 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 (149348399) 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, 6788549 + ... + 6788570.

It is an arithmetic number, because the mean of its divisors is an integer number (40731360).

Almost surely, 2^149348309 is an apocalyptic number.

It is an amenable number.

149348309 is a deficient number, since it is larger than the sum of its proper divisors (13577131).

149348309 is a wasteful number, since it uses less digits than its factorization.

149348309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13577130.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 149348309 is about 12220.8145800515. The cubic root of 149348309 is about 530.5586952917.

The spelling of 149348309 in words is "one hundred forty-nine million, three hundred forty-eight thousand, three hundred nine".