2147302921 has 9 divisors (see below), whose sum is σ = 2168784583. Its totient is φ = 2126033320.

The previous prime is 2147302891. The next prime is 2147302961. The reversal of 2147302921 is 1292037412.

The square root of 2147302921 is 46339.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 251571321 + 1895731600 = 15861^2 + 43540^2 .

It is not a de Polignac number, because 2147302921 - 2⁵ = 2147302889 is a prime.

It is a super-2 number, since 2×2147302921² = 9221819669070264482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2147302961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6904356 + ... + 6904666.

Almost surely, 2^2147302921 is an apocalyptic number.

2147302921 is the 46339-th square number.

2147302921 is the 23170-th centered octagonal number.

It is an amenable number.

2147302921 is a deficient number, since it is larger than the sum of its proper divisors (21481662).

2147302921 is an frugal number, since it uses more digits than its factorization.

2147302921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The cubic root of 2147302921 is about 1290.1229618583.

The spelling of 2147302921 in words is "two billion, one hundred forty-seven million, three hundred two thousand, nine hundred twenty-one".