7352721979 has 4 divisors (see below), whose sum is σ = 7352893600. Its totient is φ = 7352550360.

The previous prime is 7352721977. The next prime is 7352721989. The reversal of 7352721979 is 9791272537.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7352721979 - 2¹ = 7352721977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7352721977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38014 + ... + 127084.

It is an arithmetic number, because the mean of its divisors is an integer number (1838223400).

Almost surely, 2^7352721979 is an apocalyptic number.

7352721979 is a deficient number, since it is larger than the sum of its proper divisors (171621).

7352721979 is an equidigital number, since it uses as much as digits as its factorization.

7352721979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171620.

The product of its digits is 1666980, while the sum is 52.

The square root of 7352721979 is about 85748.0144318223. The cubic root of 7352721979 is about 1944.5362705165.

The spelling of 7352721979 in words is "seven billion, three hundred fifty-two million, seven hundred twenty-one thousand, nine hundred seventy-nine".