283461472921 has 27 divisors (see below), whose sum is σ = 322881200733. Its totient is φ = 248657233440.

The previous prime is 283461472919. The next prime is 283461472961. The reversal of 283461472921 is 129274164382.

The square root of 283461472921 is 532411.

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

It can be written as a sum of positive squares in 4 ways, for example, as 947962521 + 282513510400 = 30789^2 + 531520^2 .

It is not a de Polignac number, because 283461472921 - 2¹ = 283461472919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (283461472961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 169838275 + ... + 169839943.

Almost surely, 2^283461472921 is an apocalyptic number.

283461472921 is the 532411-st square number.

283461472921 is the 266206-th centered octagonal number.

It is an amenable number.

283461472921 is a deficient number, since it is larger than the sum of its proper divisors (39419727812).

283461472921 is an frugal number, since it uses more digits than its factorization.

283461472921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418 (or 1709 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

Multiplying 283461472921 by its sum of digits (49), we get a square (13889612173129 = 3726877²).

The spelling of 283461472921 in words is "two hundred eighty-three billion, four hundred sixty-one million, four hundred seventy-two thousand, nine hundred twenty-one".