2651939 has 4 divisors (see below), whose sum is σ = 2713656. Its totient is φ = 2590224.

The previous prime is 2651911. The next prime is 2651947. The reversal of 2651939 is 9391562.

2651939 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 is a cyclic number.

It is not a de Polignac number, because 2651939 - 2⁸ = 2651683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2651899 and 2651908.

It is not an unprimeable number, because it can be changed into a prime (2651959) 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, 30794 + ... + 30879.

It is an arithmetic number, because the mean of its divisors is an integer number (678414).

2^2651939 is an apocalyptic number.

2651939 is a deficient number, since it is larger than the sum of its proper divisors (61717).

2651939 is an equidigital number, since it uses as much as digits as its factorization.

2651939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61716.

The product of its digits is 14580, while the sum is 35.

The square root of 2651939 is about 1628.4775098232. The cubic root of 2651939 is about 138.4164936016.

The spelling of 2651939 in words is "two million, six hundred fifty-one thousand, nine hundred thirty-nine".