7403397849 has 81 divisors (see below), whose sum is σ = 11853244767. Its totient is φ = 4452208992.

The previous prime is 7403397751. The next prime is 7403397851. The reversal of 7403397849 is 9487933047.

The square root of 7403397849 is 86043.

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

7403397849 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., 3882162249 + 3521235600 = 62307^2 + 59340^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7403397849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7403397795 and 7403397804.

It is not an unprimeable number, because it can be changed into a prime (7403397889) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 172172022 + ... + 172172064.

Almost surely, 2^7403397849 is an apocalyptic number.

7403397849 is the 86043-rd square number.

7403397849 is the 43022-nd centered octagonal number.

It is an amenable number.

7403397849 is a deficient number, since it is larger than the sum of its proper divisors (4449846918).

7403397849 is a wasteful number, since it uses less digits than its factorization.

7403397849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The cubic root of 7403397849 is about 1948.9933747313.

The spelling of 7403397849 in words is "seven billion, four hundred three million, three hundred ninety-seven thousand, eight hundred forty-nine".