148238909 has 16 divisors (see below), whose sum is σ = 187383168. Its totient is φ = 114115392.

The previous prime is 148238899. The next prime is 148238917. The reversal of 148238909 is 909832841.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 148238909 - 2⁸ = 148238653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 148238909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148238999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18647 + ... + 25380.

It is an arithmetic number, because the mean of its divisors is an integer number (11711448).

Almost surely, 2^148238909 is an apocalyptic number.

It is an amenable number.

148238909 is a deficient number, since it is larger than the sum of its proper divisors (39144259).

148238909 is a wasteful number, since it uses less digits than its factorization.

148238909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44084.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 148238909 is about 12175.3402005858. The cubic root of 148238909 is about 529.2417173345.

It can be divided in two parts, 14823 and 8909, that added together give a palindrome (23732).

The spelling of 148238909 in words is "one hundred forty-eight million, two hundred thirty-eight thousand, nine hundred nine".