7924404661 has 2 divisors, whose sum is σ = 7924404662. Its totient is φ = 7924404660.

The previous prime is 7924404617. The next prime is 7924404673. The reversal of 7924404661 is 1664044297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7837560900 + 86843761 = 88530^2 + 9319^2 .

It is a cyclic number.

It is not a de Polignac number, because 7924404661 - 2⁹ = 7924404149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7924414661) 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 as a sum of consecutive naturals, namely, 3962202330 + 3962202331.

It is an arithmetic number, because the mean of its divisors is an integer number (3962202331).

Almost surely, 2^7924404661 is an apocalyptic number.

It is an amenable number.

7924404661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7924404661 is an equidigital number, since it uses as much as digits as its factorization.

7924404661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 7924404661 is about 89019.1252540711. The cubic root of 7924404661 is about 1993.6804410358.

The spelling of 7924404661 in words is "seven billion, nine hundred twenty-four million, four hundred four thousand, six hundred sixty-one".