2438991 has 12 divisors (see below), whose sum is σ = 3653832. Its totient is φ = 1625832.

The previous prime is 2438977. The next prime is 2439013. The reversal of 2438991 is 1998342.

It is not a de Polignac number, because 2438991 - 2⁶ = 2438927 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2438911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4776 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (304486).

2^2438991 is an apocalyptic number.

2438991 is a deficient number, since it is larger than the sum of its proper divisors (1214841).

2438991 is an equidigital number, since it uses as much as digits as its factorization.

2438991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10052 (or 10040 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2438991 is about 1561.7269287555. The cubic root of 2438991 is about 134.6077502902.

The spelling of 2438991 in words is "two million, four hundred thirty-eight thousand, nine hundred ninety-one".