7899370243 has 2 divisors, whose sum is σ = 7899370244. Its totient is φ = 7899370242.

The previous prime is 7899370231. The next prime is 7899370267. The reversal of 7899370243 is 3420739987.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7899370243 - 2¹⁷ = 7899239171 is a prime.

It is not a weakly prime, because it can be changed into another prime (7899371243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3949685121 + 3949685122.

It is an arithmetic number, because the mean of its divisors is an integer number (3949685122).

Almost surely, 2^7899370243 is an apocalyptic number.

7899370243 is a deficient number, since it is larger than the sum of its proper divisors (1).

7899370243 is an equidigital number, since it uses as much as digits as its factorization.

7899370243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 7899370243 is about 88878.4014426452. The cubic root of 7899370243 is about 1991.5787781956.

The spelling of 7899370243 in words is "seven billion, eight hundred ninety-nine million, three hundred seventy thousand, two hundred forty-three".