2708393421 has 4 divisors (see below), whose sum is σ = 3611191232. Its totient is φ = 1805595612.

The previous prime is 2708393393. The next prime is 2708393423. The reversal of 2708393421 is 1243938072.

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 not a de Polignac number, because 2708393421 - 2¹⁰ = 2708392397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2708393421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2708393423) 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, 451398901 + ... + 451398906.

It is an arithmetic number, because the mean of its divisors is an integer number (902797808).

Almost surely, 2^2708393421 is an apocalyptic number.

It is an amenable number.

2708393421 is a deficient number, since it is larger than the sum of its proper divisors (902797811).

2708393421 is an equidigital number, since it uses as much as digits as its factorization.

2708393421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902797810.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2708393421 is about 52042.2272870791. The cubic root of 2708393421 is about 1393.9180763313.

The spelling of 2708393421 in words is "two billion, seven hundred eight million, three hundred ninety-three thousand, four hundred twenty-one".