49818239 has 4 divisors (see below), whose sum is σ = 51033360. Its totient is φ = 48603120.

The previous prime is 49818233. The next prime is 49818277. The reversal of 49818239 is 93281894.

It is a happy number.

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 49818239 - 2⁸ = 49817983 is a prime.

It is a super-2 number, since 2×49818239² = 4963713874122242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49818239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49818233) 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, 607499 + ... + 607580.

It is an arithmetic number, because the mean of its divisors is an integer number (12758340).

Almost surely, 2^49818239 is an apocalyptic number.

49818239 is a deficient number, since it is larger than the sum of its proper divisors (1215121).

49818239 is a wasteful number, since it uses less digits than its factorization.

49818239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215120.

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

The square root of 49818239 is about 7058.2036666563. The cubic root of 49818239 is about 367.9561990047.

The spelling of 49818239 in words is "forty-nine million, eight hundred eighteen thousand, two hundred thirty-nine".