7920549393 has 16 divisors (see below), whose sum is σ = 10688034240. Its totient is φ = 5216811776.

The previous prime is 7920549317. The next prime is 7920549443. The reversal of 7920549393 is 3939450297.

It is a cyclic number.

It is not a de Polignac number, because 7920549393 - 2⁸ = 7920549137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7920549293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337621 + ... + 360317.

It is an arithmetic number, because the mean of its divisors is an integer number (668002140).

Almost surely, 2^7920549393 is an apocalyptic number.

It is an amenable number.

7920549393 is a deficient number, since it is larger than the sum of its proper divisors (2767484847).

7920549393 is a wasteful number, since it uses less digits than its factorization.

7920549393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24096.

The product of its (nonzero) digits is 1837080, while the sum is 51.

The square root of 7920549393 is about 88997.4684639962. The cubic root of 7920549393 is about 1993.3570762941.

The spelling of 7920549393 in words is "seven billion, nine hundred twenty million, five hundred forty-nine thousand, three hundred ninety-three".