2391938 has 8 divisors (see below), whose sum is σ = 3597132. Its totient is φ = 1192896.

The previous prime is 2391937. The next prime is 2391947. The reversal of 2391938 is 8391932.

2391938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1803649 + 588289 = 1343^2 + 767^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2391898 and 2391907.

It is not an unprimeable number, because it can be changed into a prime (2391937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395 + ... + 2222.

2^2391938 is an apocalyptic number.

2391938 is a deficient number, since it is larger than the sum of its proper divisors (1205194).

2391938 is a wasteful number, since it uses less digits than its factorization.

2391938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076.

The product of its digits is 11664, while the sum is 35.

The square root of 2391938 is about 1546.5891503564. The cubic root of 2391938 is about 133.7365060483.

The spelling of 2391938 in words is "two million, three hundred ninety-one thousand, nine hundred thirty-eight".