7891879423 has 2 divisors, whose sum is σ = 7891879424. Its totient is φ = 7891879422.

The previous prime is 7891879403. The next prime is 7891879469. The reversal of 7891879423 is 3249781987.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7891879423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7891879403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3945939711 + 3945939712.

It is an arithmetic number, because the mean of its divisors is an integer number (3945939712).

Almost surely, 2^7891879423 is an apocalyptic number.

7891879423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7891879423 is an equidigital number, since it uses as much as digits as its factorization.

7891879423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 58.

The square root of 7891879423 is about 88836.2506131365. The cubic root of 7891879423 is about 1990.9490538914.

The spelling of 7891879423 in words is "seven billion, eight hundred ninety-one million, eight hundred seventy-nine thousand, four hundred twenty-three".