2103639 has 8 divisors (see below), whose sum is σ = 2834160. Its totient is φ = 1387776.

The previous prime is 2103617. The next prime is 2103653. The reversal of 2103639 is 9363012.

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

It is not a de Polignac number, because 2103639 - 2⁸ = 2103383 is a prime.

It is a super-3 number, since 3×2103639³ = 27927682334433318357, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3324 + ... + 3905.

It is an arithmetic number, because the mean of its divisors is an integer number (354270).

2^2103639 is an apocalyptic number.

2103639 is a deficient number, since it is larger than the sum of its proper divisors (730521).

2103639 is an equidigital number, since it uses as much as digits as its factorization.

2103639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7329.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 2103639 is about 1450.3927054422. The cubic root of 2103639 is about 128.1318425059.

The spelling of 2103639 in words is "two million, one hundred three thousand, six hundred thirty-nine".