50426639 has 4 divisors (see below), whose sum is σ = 50898024. Its totient is φ = 49955256.

The previous prime is 50426633. The next prime is 50426647. The reversal of 50426639 is 93662405.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50426639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50426599 and 50426608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50426633) 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, 235532 + ... + 235745.

It is an arithmetic number, because the mean of its divisors is an integer number (12724506).

Almost surely, 2^50426639 is an apocalyptic number.

50426639 is a deficient number, since it is larger than the sum of its proper divisors (471385).

50426639 is a wasteful number, since it uses less digits than its factorization.

50426639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471384.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 50426639 is about 7101.1716638876. The cubic root of 50426639 is about 369.4480179419.

The spelling of 50426639 in words is "fifty million, four hundred twenty-six thousand, six hundred thirty-nine".