50639397 has 4 divisors (see below), whose sum is σ = 67519200. Its totient is φ = 33759596.

The previous prime is 50639383. The next prime is 50639411. The reversal of 50639397 is 79393605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (50639383) and next prime (50639411).

It is a cyclic number.

It is not a de Polignac number, because 50639397 - 2⁷ = 50639269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50639377) 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, 8439897 + ... + 8439902.

It is an arithmetic number, because the mean of its divisors is an integer number (16879800).

Almost surely, 2^50639397 is an apocalyptic number.

It is an amenable number.

50639397 is a deficient number, since it is larger than the sum of its proper divisors (16879803).

50639397 is a wasteful number, since it uses less digits than its factorization.

50639397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16879802.

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 50639397 is about 7116.1363814924. The cubic root of 50639397 is about 369.9668755347.

It can be divided in two parts, 506 and 39397, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 50639397 in words is "fifty million, six hundred thirty-nine thousand, three hundred ninety-seven".