84722840039 has 2 divisors, whose sum is σ = 84722840040. Its totient is φ = 84722840038.

The previous prime is 84722840029. The next prime is 84722840051. The reversal of 84722840039 is 93004822748.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84722840039 - 2¹² = 84722835943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84722839975 and 84722840002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84722840029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42361420019 + 42361420020.

It is an arithmetic number, because the mean of its divisors is an integer number (42361420020).

Almost surely, 2^84722840039 is an apocalyptic number.

84722840039 is a deficient number, since it is larger than the sum of its proper divisors (1).

84722840039 is an equidigital number, since it uses as much as digits as its factorization.

84722840039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 84722840039 in words is "eighty-four billion, seven hundred twenty-two million, eight hundred forty thousand, thirty-nine".