61919339 has 2 divisors, whose sum is σ = 61919340. Its totient is φ = 61919338.

The previous prime is 61919327. The next prime is 61919353. The reversal of 61919339 is 93391916.

61919339 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 a de Polignac number, because none of the positive numbers 2^k-61919339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61919296 and 61919305.

It is not a weakly prime, because it can be changed into another prime (61919359) 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, 30959669 + 30959670.

It is an arithmetic number, because the mean of its divisors is an integer number (30959670).

Almost surely, 2^61919339 is an apocalyptic number.

61919339 is a deficient number, since it is larger than the sum of its proper divisors (1).

61919339 is an equidigital number, since it uses as much as digits as its factorization.

61919339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39366, while the sum is 41.

The square root of 61919339 is about 7868.8842284024. The cubic root of 61919339 is about 395.6174480430.

The spelling of 61919339 in words is "sixty-one million, nine hundred nineteen thousand, three hundred thirty-nine".