61884839 has 2 divisors, whose sum is σ = 61884840. Its totient is φ = 61884838.

The previous prime is 61884833. The next prime is 61884857. The reversal of 61884839 is 93848816.

61884839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61884839 - 2⁸ = 61884583 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61884793 and 61884802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61884833) 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 as a sum of consecutive naturals, namely, 30942419 + 30942420.

It is an arithmetic number, because the mean of its divisors is an integer number (30942420).

Almost surely, 2^61884839 is an apocalyptic number.

61884839 is a deficient number, since it is larger than the sum of its proper divisors (1).

61884839 is an equidigital number, since it uses as much as digits as its factorization.

61884839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 47.

The square root of 61884839 is about 7866.6917443103. The cubic root of 61884839 is about 395.5439581453.

The spelling of 61884839 in words is "sixty-one million, eight hundred eighty-four thousand, eight hundred thirty-nine".