149233709 has 4 divisors (see below), whose sum is σ = 149482620. Its totient is φ = 148984800.

The previous prime is 149233703. The next prime is 149233717. The reversal of 149233709 is 907332941.

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 77492809 + 71740900 = 8803^2 + 8470^2 .

It is a cyclic number.

It is not a de Polignac number, because 149233709 - 2²⁰ = 148185133 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 (149233703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123554 + ... + 124755.

It is an arithmetic number, because the mean of its divisors is an integer number (37370655).

Almost surely, 2^149233709 is an apocalyptic number.

It is an amenable number.

149233709 is a deficient number, since it is larger than the sum of its proper divisors (248911).

149233709 is an equidigital number, since it uses as much as digits as its factorization.

149233709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248910.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 149233709 is about 12216.1249584310. The cubic root of 149233709 is about 530.4229553664.

The spelling of 149233709 in words is "one hundred forty-nine million, two hundred thirty-three thousand, seven hundred nine".