50439869 has 4 divisors (see below), whose sum is σ = 50455644. Its totient is φ = 50424096.

The previous prime is 50439827. The next prime is 50439877. The reversal of 50439869 is 96893405.

50439869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43731769 + 6708100 = 6613^2 + 2590^2 .

It is a cyclic number.

It is not a de Polignac number, because 50439869 - 2²⁴ = 33662653 is a prime.

It is a super-2 number, since 2×50439869² = 5088360769474322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50439899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202 + ... + 10115.

It is an arithmetic number, because the mean of its divisors is an integer number (12613911).

Almost surely, 2^50439869 is an apocalyptic number.

It is an amenable number.

50439869 is a deficient number, since it is larger than the sum of its proper divisors (15775).

50439869 is a wasteful number, since it uses less digits than its factorization.

50439869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15774.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 50439869 is about 7102.1031392117. The cubic root of 50439869 is about 369.4803247410.

The spelling of 50439869 in words is "fifty million, four hundred thirty-nine thousand, eight hundred sixty-nine".