2439398399819 has 2 divisors, whose sum is σ = 2439398399820. Its totient is φ = 2439398399818.

The previous prime is 2439398399813. The next prime is 2439398399831. The reversal of 2439398399819 is 9189938939342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2439398399819 - 2¹² = 2439398395723 is a prime.

It is a super-2 number, since 2×2439398399819² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2439398399819.

It is not a weakly prime, because it can be changed into another prime (2439398399813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1219699199909 + 1219699199910.

It is an arithmetic number, because the mean of its divisors is an integer number (1219699199910).

Almost surely, 2^{2439398399819} is an apocalyptic number.

2439398399819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2439398399819 is an equidigital number, since it uses as much as digits as its factorization.

2439398399819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816293376, while the sum is 77.

The spelling of 2439398399819 in words is "two trillion, four hundred thirty-nine billion, three hundred ninety-eight million, three hundred ninety-nine thousand, eight hundred nineteen".