149416609 has 8 divisors (see below), whose sum is σ = 150505992. Its totient is φ = 148331520.

The previous prime is 149416591. The next prime is 149416639. The reversal of 149416609 is 906614941.

It can be written as a sum of positive squares in 4 ways, for example, as 88209 + 149328400 = 297^2 + 12220^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 149416609 - 2⁷ = 149416481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149416639) 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, 100149 + ... + 101629.

It is an arithmetic number, because the mean of its divisors is an integer number (18813249).

Almost surely, 2^149416609 is an apocalyptic number.

It is an amenable number.

149416609 is a deficient number, since it is larger than the sum of its proper divisors (1089383).

149416609 is a wasteful number, since it uses less digits than its factorization.

149416609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 149416609 is about 12223.6086733828. The cubic root of 149416609 is about 530.6395613703.

The spelling of 149416609 in words is "one hundred forty-nine million, four hundred sixteen thousand, six hundred nine".