2593429921 has 4 divisors (see below), whose sum is σ = 2593735492. Its totient is φ = 2593124352.

The previous prime is 2593429913. The next prime is 2593429963. The reversal of 2593429921 is 1299243952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1708664896 + 884765025 = 41336^2 + 29745^2 .

It is a cyclic number.

It is not a de Polignac number, because 2593429921 - 2³ = 2593429913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2593429021) 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, 139680 + ... + 157153.

It is an arithmetic number, because the mean of its divisors is an integer number (648433873).

Almost surely, 2^2593429921 is an apocalyptic number.

It is an amenable number.

2593429921 is a deficient number, since it is larger than the sum of its proper divisors (305571).

2593429921 is an equidigital number, since it uses as much as digits as its factorization.

2593429921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305570.

The product of its digits is 349920, while the sum is 46.

The square root of 2593429921 is about 50925.7294596749. The cubic root of 2593429921 is about 1373.9096450806.

It can be divided in two parts, 25934 and 29921, that added together give a palindrome (55855).

The spelling of 2593429921 in words is "two billion, five hundred ninety-three million, four hundred twenty-nine thousand, nine hundred twenty-one".