2641399 has 4 divisors (see below), whose sum is σ = 2780440. Its totient is φ = 2502360.

The previous prime is 2641391. The next prime is 2641411. The reversal of 2641399 is 9931462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9931462 = 2 ⋅4965731.

It is a cyclic number.

It is not a de Polignac number, because 2641399 - 2³ = 2641391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2641391) 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 3 ways as a sum of consecutive naturals, for example, 69492 + ... + 69529.

It is an arithmetic number, because the mean of its divisors is an integer number (695110).

2^2641399 is an apocalyptic number.

2641399 is a deficient number, since it is larger than the sum of its proper divisors (139041).

2641399 is a wasteful number, since it uses less digits than its factorization.

2641399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139040.

The product of its digits is 11664, while the sum is 34.

The square root of 2641399 is about 1625.2381363972. The cubic root of 2641399 is about 138.2328736277.

The spelling of 2641399 in words is "two million, six hundred forty-one thousand, three hundred ninety-nine".