7941450721 has 4 divisors (see below), whose sum is σ = 7998583600. Its totient is φ = 7884317844.

The previous prime is 7941450631. The next prime is 7941450757. The reversal of 7941450721 is 1270541497.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7941450721 - 2⁷ = 7941450593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7941450221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28566231 + ... + 28566508.

It is an arithmetic number, because the mean of its divisors is an integer number (1999645900).

Almost surely, 2^7941450721 is an apocalyptic number.

It is an amenable number.

7941450721 is a deficient number, since it is larger than the sum of its proper divisors (57132879).

7941450721 is a wasteful number, since it uses less digits than its factorization.

7941450721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57132878.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 7941450721 is about 89114.8176287199. The cubic root of 7941450721 is about 1995.1089419427.

The spelling of 7941450721 in words is "seven billion, nine hundred forty-one million, four hundred fifty thousand, seven hundred twenty-one".