7948279 has 2 divisors, whose sum is σ = 7948280. Its totient is φ = 7948278.

The previous prime is 7948267. The next prime is 7948309. The reversal of 7948279 is 9728497.

It is a weak prime.

It is an emirp because it is prime and its reverse (9728497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7948279 - 2⁵ = 7948247 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7948079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3974139 + 3974140.

It is an arithmetic number, because the mean of its divisors is an integer number (3974140).

Almost surely, 2^7948279 is an apocalyptic number.

7948279 is a deficient number, since it is larger than the sum of its proper divisors (1).

7948279 is an equidigital number, since it uses as much as digits as its factorization.

7948279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 7948279 is about 2819.2692315563. The cubic root of 7948279 is about 199.5680594752.

The spelling of 7948279 in words is "seven million, nine hundred forty-eight thousand, two hundred seventy-nine".