2639933 has 4 divisors (see below), whose sum is σ = 2657568. Its totient is φ = 2622300.

The previous prime is 2639927. The next prime is 2639939. The reversal of 2639933 is 3399362.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3399362 = 2 ⋅1699681.

It is an interprime number because it is at equal distance from previous prime (2639927) and next prime (2639939).

It is a cyclic number.

It is not a de Polignac number, because 2639933 - 2⁶ = 2639869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2639893 and 2639902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639939) 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, 8591 + ... + 8892.

It is an arithmetic number, because the mean of its divisors is an integer number (664392).

2^2639933 is an apocalyptic number.

It is an amenable number.

2639933 is a deficient number, since it is larger than the sum of its proper divisors (17635).

2639933 is a wasteful number, since it uses less digits than its factorization.

2639933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17634.

The product of its digits is 26244, while the sum is 35.

The square root of 2639933 is about 1624.7870629716. The cubic root of 2639933 is about 138.2072954026.

The spelling of 2639933 in words is "two million, six hundred thirty-nine thousand, nine hundred thirty-three".