149668809 has 8 divisors (see below), whose sum is σ = 199698912. Its totient is φ = 99708960.

The previous prime is 149668793. The next prime is 149668817. The reversal of 149668809 is 908866941.

It is a happy number.

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

It is not a de Polignac number, because 149668809 - 2⁴ = 149668793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149668859) 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, 12372 + ... + 21269.

It is an arithmetic number, because the mean of its divisors is an integer number (24962364).

Almost surely, 2^149668809 is an apocalyptic number.

It is an amenable number.

149668809 is a deficient number, since it is larger than the sum of its proper divisors (50030103).

149668809 is a wasteful number, since it uses less digits than its factorization.

149668809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35127.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 149668809 is about 12233.9204264210. The cubic root of 149668809 is about 530.9379487076.

The spelling of 149668809 in words is "one hundred forty-nine million, six hundred sixty-eight thousand, eight hundred nine".