61283839 has 2 divisors, whose sum is σ = 61283840. Its totient is φ = 61283838.

The previous prime is 61283837. The next prime is 61283857. The reversal of 61283839 is 93838216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61283839 - 2¹ = 61283837 is a prime.

Together with 61283837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61283837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30641919 + 30641920.

It is an arithmetic number, because the mean of its divisors is an integer number (30641920).

Almost surely, 2^61283839 is an apocalyptic number.

61283839 is a deficient number, since it is larger than the sum of its proper divisors (1).

61283839 is an equidigital number, since it uses as much as digits as its factorization.

61283839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 61283839 is about 7828.3995171427. The cubic root of 61283839 is about 394.2593373662.

The spelling of 61283839 in words is "sixty-one million, two hundred eighty-three thousand, eight hundred thirty-nine".