7479574649 has 4 divisors (see below), whose sum is σ = 7556683764. Its totient is φ = 7402465536.

The previous prime is 7479574639. The next prime is 7479574651. The reversal of 7479574649 is 9464759747.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3589807225 + 3889767424 = 59915^2 + 62368^2 .

It is a cyclic number.

It is not a de Polignac number, because 7479574649 - 2⁴ = 7479574633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7479574591 and 7479574600.

It is not an unprimeable number, because it can be changed into a prime (7479574639) 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 3 ways as a sum of consecutive naturals, for example, 38554412 + ... + 38554605.

It is an arithmetic number, because the mean of its divisors is an integer number (1889170941).

Almost surely, 2^7479574649 is an apocalyptic number.

It is an amenable number.

7479574649 is a deficient number, since it is larger than the sum of its proper divisors (77109115).

7479574649 is an equidigital number, since it uses as much as digits as its factorization.

7479574649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77109114.

The product of its digits is 53343360, while the sum is 62.

The square root of 7479574649 is about 86484.5341607388. The cubic root of 7479574649 is about 1955.6552595803.

The spelling of 7479574649 in words is "seven billion, four hundred seventy-nine million, five hundred seventy-four thousand, six hundred forty-nine".