149884709 has 4 divisors (see below), whose sum is σ = 161414316. Its totient is φ = 138355104.

The previous prime is 149884687. The next prime is 149884717. The reversal of 149884709 is 907488941.

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 79156609 + 70728100 = 8897^2 + 8410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149884709 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 (149884729) 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, 5764784 + ... + 5764809.

It is an arithmetic number, because the mean of its divisors is an integer number (40353579).

Almost surely, 2^149884709 is an apocalyptic number.

It is an amenable number.

149884709 is a deficient number, since it is larger than the sum of its proper divisors (11529607).

149884709 is a wasteful number, since it uses less digits than its factorization.

149884709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11529606.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 149884709 is about 12242.7410737955. The cubic root of 149884709 is about 531.1931219567.

The spelling of 149884709 in words is "one hundred forty-nine million, eight hundred eighty-four thousand, seven hundred nine".