2279881 has 8 divisors (see below), whose sum is σ = 2337984. Its totient is φ = 2222640.

The previous prime is 2279869. The next prime is 2279897. The reversal of 2279881 is 1889722.

2279881 = T₇₉ + T₈₀ + ... + T₂₄₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2279881 - 2¹¹ = 2277833 is a prime.

It is a super-2 number, since 2×2279881² = 10395714748322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2279881.

It is not an unprimeable number, because it can be changed into a prime (2279281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11475 + ... + 11671.

It is an arithmetic number, because the mean of its divisors is an integer number (292248).

2^2279881 is an apocalyptic number.

It is an amenable number.

2279881 is a deficient number, since it is larger than the sum of its proper divisors (58103).

2279881 is a wasteful number, since it uses less digits than its factorization.

2279881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431.

The product of its digits is 16128, while the sum is 37.

The square root of 2279881 is about 1509.9274817023. The cubic root of 2279881 is about 131.6145974390.

It can be divided in two parts, 2279 and 881, that added together give a triangular number (3160 = T₇₉).

The spelling of 2279881 in words is "two million, two hundred seventy-nine thousand, eight hundred eighty-one".