2383981 has 4 divisors (see below), whose sum is σ = 2434752. Its totient is φ = 2333212.

The previous prime is 2383943. The next prime is 2383991. The reversal of 2383981 is 1893832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2383981 is a prime.

It is a super-2 number, since 2×2383981² = 11366730816722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2383921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25315 + ... + 25408.

It is an arithmetic number, because the mean of its divisors is an integer number (608688).

2^2383981 is an apocalyptic number.

It is an amenable number.

2383981 is a deficient number, since it is larger than the sum of its proper divisors (50771).

2383981 is an equidigital number, since it uses as much as digits as its factorization.

2383981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50770.

The product of its digits is 10368, while the sum is 34.

The square root of 2383981 is about 1544.0145724701. The cubic root of 2383981 is about 133.5880457410.

It can be divided in two parts, 2383 and 981, that added together give a square (3364 = 58²).

The spelling of 2383981 in words is "two million, three hundred eighty-three thousand, nine hundred eighty-one".