2044047621 has 32 divisors (see below), whose sum is σ = 3428011008. Its totient is φ = 1052432640.

The previous prime is 2044047617. The next prime is 2044047641. The reversal of 2044047621 is 1267404402.

It is not a de Polignac number, because 2044047621 - 2² = 2044047617 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044047611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13051 + ... + 65256.

It is an arithmetic number, because the mean of its divisors is an integer number (107125344).

Almost surely, 2^2044047621 is an apocalyptic number.

2044047621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2044047621 is the 26103-rd octagonal number.

It is an amenable number.

2044047621 is a deficient number, since it is larger than the sum of its proper divisors (1383963387).

2044047621 is a wasteful number, since it uses less digits than its factorization.

2044047621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78441.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 2044047621 is about 45211.1448760148. The cubic root of 2044047621 is about 1269.1033870265.

The spelling of 2044047621 in words is "two billion, forty-four million, forty-seven thousand, six hundred twenty-one".