9494358721 has 9 divisors (see below), whose sum is σ = 9576816483. Its totient is φ = 9412607400.

The previous prime is 9494358707. The next prime is 9494358733. The reversal of 9494358721 is 1278534949.

The square root of 9494358721 is 97439.

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

9494358721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8188259121 + 1306099600 = 90489^2 + 36140^2 .

It is not a de Polignac number, because 9494358721 - 2⁵ = 9494358689 is a prime.

It is a Duffinian number.

Its product of digits (2177280) is a multiple of the sum of its prime divisors (840).

It is not an unprimeable number, because it can be changed into a prime (9494358701) 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, 13543671 + ... + 13544371.

Almost surely, 2^9494358721 is an apocalyptic number.

9494358721 is the 97439-th square number.

9494358721 is the 48720-th centered octagonal number.

It is an amenable number.

9494358721 is a deficient number, since it is larger than the sum of its proper divisors (82457762).

9494358721 is an frugal number, since it uses more digits than its factorization.

9494358721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680 (or 840 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The cubic root of 9494358721 is about 2117.4924904774.

It can be divided in two parts, 94943 and 58721, that added together give a square (153664 = 392²).

The spelling of 9494358721 in words is "nine billion, four hundred ninety-four million, three hundred fifty-eight thousand, seven hundred twenty-one".