2471489621 has 4 divisors (see below), whose sum is σ = 2471839200. Its totient is φ = 2471140044.

The previous prime is 2471489609. The next prime is 2471489677. The reversal of 2471489621 is 1269841742.

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 a cyclic number.

It is not a de Polignac number, because 2471489621 - 2¹⁸ = 2471227477 is a prime.

It is a super-2 number, since 2×2471489621² = 12216521893421447282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2471489021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163961 + ... + 178398.

It is an arithmetic number, because the mean of its divisors is an integer number (617959800).

Almost surely, 2^2471489621 is an apocalyptic number.

It is an amenable number.

2471489621 is a deficient number, since it is larger than the sum of its proper divisors (349579).

2471489621 is an equidigital number, since it uses as much as digits as its factorization.

2471489621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349578.

The product of its digits is 193536, while the sum is 44.

The square root of 2471489621 is about 49714.0787001027. The cubic root of 2471489621 is about 1352.0297990482.

The spelling of 2471489621 in words is "two billion, four hundred seventy-one million, four hundred eighty-nine thousand, six hundred twenty-one".