148009839 has 4 divisors (see below), whose sum is σ = 197346456. Its totient is φ = 98673224.

The previous prime is 148009831. The next prime is 148009859. The reversal of 148009839 is 938900841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 148009839 - 2³ = 148009831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 148009839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148009831) 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, 24668304 + ... + 24668309.

It is an arithmetic number, because the mean of its divisors is an integer number (49336614).

Almost surely, 2^148009839 is an apocalyptic number.

148009839 is a deficient number, since it is larger than the sum of its proper divisors (49336617).

148009839 is an equidigital number, since it uses as much as digits as its factorization.

148009839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49336616.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 148009839 is about 12165.9294342849. The cubic root of 148009839 is about 528.9689686546.

The spelling of 148009839 in words is "one hundred forty-eight million, nine thousand, eight hundred thirty-nine".