7839145099 has 2 divisors, whose sum is σ = 7839145100. Its totient is φ = 7839145098.

The previous prime is 7839145081. The next prime is 7839145103. The reversal of 7839145099 is 9905419387.

7839145099 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (9905419387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7839145099 - 2¹⁵ = 7839112331 is a prime.

It is a super-2 number, since 2×7839145099² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7839143099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3919572549 + 3919572550.

It is an arithmetic number, because the mean of its divisors is an integer number (3919572550).

Almost surely, 2^7839145099 is an apocalyptic number.

7839145099 is a deficient number, since it is larger than the sum of its proper divisors (1).

7839145099 is an equidigital number, since it uses as much as digits as its factorization.

7839145099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 7839145099 is about 88538.9467917933. The cubic root of 7839145099 is about 1986.5045663756.

The spelling of 7839145099 in words is "seven billion, eight hundred thirty-nine million, one hundred forty-five thousand, ninety-nine".