2239881 has 8 divisors (see below), whose sum is σ = 3413184. Its totient is φ = 1279920.

The previous prime is 2239847. The next prime is 2239883. The reversal of 2239881 is 1889322.

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

It is not a de Polignac number, because 2239881 - 2⁷ = 2239753 is a prime.

It is a super-2 number, since 2×2239881² = 10034133788322, which contains 22 as substring.

2239881 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239883) 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, 53310 + ... + 53351.

It is an arithmetic number, because the mean of its divisors is an integer number (426648).

2^2239881 is an apocalyptic number.

2239881 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2239881 is a deficient number, since it is larger than the sum of its proper divisors (1173303).

2239881 is a wasteful number, since it uses less digits than its factorization.

2239881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106671.

The product of its digits is 6912, while the sum is 33.

The square root of 2239881 is about 1496.6231990718. The cubic root of 2239881 is about 130.8403353612.

It can be divided in two parts, 22 and 39881, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 2239881 in words is "two million, two hundred thirty-nine thousand, eight hundred eighty-one".