2279979 has 18 divisors (see below), whose sum is σ = 3568500. Its totient is φ = 1402128.

The previous prime is 2279933. The next prime is 2279993. The reversal of 2279979 is 9799722.

It is not a de Polignac number, because 2279979 - 2⁹ = 2279467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2278979) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 772 + ... + 2270.

It is an arithmetic number, because the mean of its divisors is an integer number (198250).

2^2279979 is an apocalyptic number.

2279979 is a deficient number, since it is larger than the sum of its proper divisors (1288521).

2279979 is a wasteful number, since it uses less digits than its factorization.

2279979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531 (or 1515 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 2279979 is about 1509.9599332433. The cubic root of 2279979 is about 131.6164832167.

The spelling of 2279979 in words is "two million, two hundred seventy-nine thousand, nine hundred seventy-nine".