2391338 has 4 divisors (see below), whose sum is σ = 3587010. Its totient is φ = 1195668.

The previous prime is 2391331. The next prime is 2391349. The reversal of 2391338 is 8331932.

2391338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1385329 + 1006009 = 1177^2 + 1003^2 .

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2391338.

It is not an unprimeable number, because it can be changed into a prime (2391331) 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 as a sum of consecutive naturals, namely, 597833 + ... + 597836.

2^2391338 is an apocalyptic number.

2391338 is a deficient number, since it is larger than the sum of its proper divisors (1195672).

2391338 is a wasteful number, since it uses less digits than its factorization.

2391338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195671.

The product of its digits is 3888, while the sum is 29.

The square root of 2391338 is about 1546.3951629516. The cubic root of 2391338 is about 133.7253228412.

The spelling of 2391338 in words is "two million, three hundred ninety-one thousand, three hundred thirty-eight".