2563399421 has 8 divisors (see below), whose sum is σ = 2943616800. Its totient is φ = 2207712240.

The previous prime is 2563399409. The next prime is 2563399477. The reversal of 2563399421 is 1249933652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2563399421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563399481) 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 7 ways as a sum of consecutive naturals, for example, 6132326 + ... + 6132743.

It is an arithmetic number, because the mean of its divisors is an integer number (367952100).

Almost surely, 2^2563399421 is an apocalyptic number.

It is an amenable number.

2563399421 is a deficient number, since it is larger than the sum of its proper divisors (380217379).

2563399421 is a wasteful number, since it uses less digits than its factorization.

2563399421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12265099.

The product of its digits is 349920, while the sum is 44.

The square root of 2563399421 is about 50630.0248963004. The cubic root of 2563399421 is about 1368.5860028669.

The spelling of 2563399421 in words is "two billion, five hundred sixty-three million, three hundred ninety-nine thousand, four hundred twenty-one".