49565639 has 2 divisors, whose sum is σ = 49565640. Its totient is φ = 49565638.

The previous prime is 49565609. The next prime is 49565647. The reversal of 49565639 is 93656594.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49565639 - 2¹² = 49561543 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 49565593 and 49565602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49565609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24782819 + 24782820.

It is an arithmetic number, because the mean of its divisors is an integer number (24782820).

Almost surely, 2^49565639 is an apocalyptic number.

49565639 is a deficient number, since it is larger than the sum of its proper divisors (1).

49565639 is an equidigital number, since it uses as much as digits as its factorization.

49565639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 47.

The square root of 49565639 is about 7040.2868549513. The cubic root of 49565639 is about 367.3332459562. Note that the first 3 decimals are identical.

The spelling of 49565639 in words is "forty-nine million, five hundred sixty-five thousand, six hundred thirty-nine".