149709 has 8 divisors (see below), whose sum is σ = 228160. Its totient is φ = 85536.

The previous prime is 149689. The next prime is 149711. The reversal of 149709 is 907941.

149709 = T₃₅ + T₃₆ + ... + T₉₇.

149709 is nontrivially palindromic in base 11.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149709 - 2⁹ = 149197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544 + ... + 3585.

It is an arithmetic number, because the mean of its divisors is an integer number (28520).

2¹⁴⁹⁷⁰⁹ is an apocalyptic number.

It is an amenable number.

149709 is a deficient number, since it is larger than the sum of its proper divisors (78451).

149709 is an equidigital number, since it uses as much as digits as its factorization.

149709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7139.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 149709 is about 386.9224728547. The cubic root of 149709 is about 53.0985469224.

It can be divided in two parts, 149 and 709, that added together give a palindrome (858).

The spelling of 149709 in words is "one hundred forty-nine thousand, seven hundred nine".