4704450921 has 15 divisors (see below), whose sum is σ = 7028558823. Its totient is φ = 3135889080.

The previous prime is 4704450913. The next prime is 4704451007. The reversal of 4704450921 is 1290544074.

It is a happy number.

The square root of 4704450921 is 68589.

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., 4165282521 + 539168400 = 64539^2 + 23220^2 .

It is not a de Polignac number, because 4704450921 - 2³ = 4704450913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4704454921) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 613491 + ... + 621111.

Almost surely, 2^4704450921 is an apocalyptic number.

4704450921 is the 68589-th square number.

4704450921 is the 34295-th centered octagonal number.

It is an amenable number.

4704450921 is a deficient number, since it is larger than the sum of its proper divisors (2324107902).

4704450921 is an frugal number, since it uses more digits than its factorization.

4704450921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15254 (or 7624 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The cubic root of 4704450921 is about 1675.5972826180.

Multiplying 4704450921 by its sum of digits (36), we get a square (169360233156 = 411534²).

Adding to 4704450921 its reverse (1290544074), we get a palindrome (5994994995).

It can be divided in two parts, 4704 and 450921, that added together give a square (455625 = 675²).

The spelling of 4704450921 in words is "four billion, seven hundred four million, four hundred fifty thousand, nine hundred twenty-one".