2689044421 has 4 divisors (see below), whose sum is σ = 3073193632. Its totient is φ = 2304895212.

The previous prime is 2689044367. The next prime is 2689044427. The reversal of 2689044421 is 1244409862.

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.

It is a cyclic number.

It is not a de Polignac number, because 2689044421 - 2²¹ = 2686947269 is a prime.

It is a super-3 number, since 3×2689044421³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689044427) 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, 192074595 + ... + 192074608.

It is an arithmetic number, because the mean of its divisors is an integer number (768298408).

Almost surely, 2^2689044421 is an apocalyptic number.

It is an amenable number.

2689044421 is a deficient number, since it is larger than the sum of its proper divisors (384149211).

2689044421 is an equidigital number, since it uses as much as digits as its factorization.

2689044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384149210.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 2689044421 is about 51855.9969627429. The cubic root of 2689044421 is about 1390.5907157485.

The spelling of 2689044421 in words is "two billion, six hundred eighty-nine million, forty-four thousand, four hundred twenty-one".