49782389 has 2 divisors, whose sum is σ = 49782390. Its totient is φ = 49782388.

The previous prime is 49782377. The next prime is 49782391. The reversal of 49782389 is 98328794.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48762289 + 1020100 = 6983^2 + 1010^2 .

It is a cyclic number.

It is not a de Polignac number, because 49782389 - 2¹² = 49778293 is a prime.

Together with 49782391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49082389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24891194 + 24891195.

It is an arithmetic number, because the mean of its divisors is an integer number (24891195).

Almost surely, 2^49782389 is an apocalyptic number.

It is an amenable number.

49782389 is a deficient number, since it is larger than the sum of its proper divisors (1).

49782389 is an equidigital number, since it uses as much as digits as its factorization.

49782389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 49782389 is about 7055.6636115960. The cubic root of 49782389 is about 367.8679154398.

The spelling of 49782389 in words is "forty-nine million, seven hundred eighty-two thousand, three hundred eighty-nine".