8001279 has 24 divisors (see below), whose sum is σ = 13580112. Its totient is φ = 4475520.

The previous prime is 8001277. The next prime is 8001281. The reversal of 8001279 is 9721008.

It is an interprime number because it is at equal distance from previous prime (8001277) and next prime (8001281).

It is not a de Polignac number, because 8001279 - 2¹ = 8001277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8001277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1822 + ... + 4395.

It is an arithmetic number, because the mean of its divisors is an integer number (565838).

Almost surely, 2^8001279 is an apocalyptic number.

8001279 is a deficient number, since it is larger than the sum of its proper divisors (5578833).

8001279 is a wasteful number, since it uses less digits than its factorization.

8001279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247 (or 6244 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 8001279 is about 2828.6532131034. The cubic root of 8001279 is about 200.0106577654.

The spelling of 8001279 in words is "eight million, one thousand, two hundred seventy-nine".