2788421403 has 4 divisors (see below), whose sum is σ = 3717895208. Its totient is φ = 1858947600.

The previous prime is 2788421401. The next prime is 2788421423. The reversal of 2788421403 is 3041248872.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2788421403 - 2¹ = 2788421401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2788421401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464736898 + ... + 464736903.

It is an arithmetic number, because the mean of its divisors is an integer number (929473802).

Almost surely, 2^2788421403 is an apocalyptic number.

2788421403 is a deficient number, since it is larger than the sum of its proper divisors (929473805).

2788421403 is an equidigital number, since it uses as much as digits as its factorization.

2788421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929473804.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 2788421403 is about 52805.5054232037. The cubic root of 2788421403 is about 1407.5142567493.

The spelling of 2788421403 in words is "two billion, seven hundred eighty-eight million, four hundred twenty-one thousand, four hundred three".