149063909 has 4 divisors (see below), whose sum is σ = 149297100. Its totient is φ = 148830720.

The previous prime is 149063879. The next prime is 149063917. The reversal of 149063909 is 909360941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 909360941 = 103 ⋅8828747.

It can be written as a sum of positive squares in 2 ways, for example, as 143760100 + 5303809 = 11990^2 + 2303^2 .

It is a cyclic number.

It is not a de Polignac number, because 149063909 - 2¹⁶ = 148998373 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 (149063209) 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, 115634 + ... + 116915.

It is an arithmetic number, because the mean of its divisors is an integer number (37324275).

Almost surely, 2^149063909 is an apocalyptic number.

It is an amenable number.

149063909 is a deficient number, since it is larger than the sum of its proper divisors (233191).

149063909 is an equidigital number, since it uses as much as digits as its factorization.

149063909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233190.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 149063909 is about 12209.1731497264. The cubic root of 149063909 is about 530.2217050381.

The spelling of 149063909 in words is "one hundred forty-nine million, sixty-three thousand, nine hundred nine".