84400239019 has 2 divisors, whose sum is σ = 84400239020. Its totient is φ = 84400239018.

The previous prime is 84400238987. The next prime is 84400239023. The reversal of 84400239019 is 91093200448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84400239019 - 2⁵ = 84400238987 is a prime.

It is a super-2 number, since 2×84400239019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84400239089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42200119509 + 42200119510.

It is an arithmetic number, because the mean of its divisors is an integer number (42200119510).

Almost surely, 2^84400239019 is an apocalyptic number.

84400239019 is a deficient number, since it is larger than the sum of its proper divisors (1).

84400239019 is an equidigital number, since it uses as much as digits as its factorization.

84400239019 is an evil number, because the sum of its binary digits is even.

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

The spelling of 84400239019 in words is "eighty-four billion, four hundred million, two hundred thirty-nine thousand, nineteen".