7929286428649 has 8 divisors (see below), whose sum is σ = 8100184767048. Its totient is φ = 7759707768960.

The previous prime is 7929286428631. The next prime is 7929286428703. The reversal of 7929286428649 is 9468246829297.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3381700323600 + 4547586105049 = 1838940^2 + 2132507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7929286428649 - 2⁵ = 7929286428617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7929286425649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329907532 + ... + 329931565.

It is an arithmetic number, because the mean of its divisors is an integer number (1012523095881).

Almost surely, 2^{7929286428649} is an apocalyptic number.

It is an amenable number.

7929286428649 is a deficient number, since it is larger than the sum of its proper divisors (170898338399).

7929286428649 is a wasteful number, since it uses less digits than its factorization.

7929286428649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659839355.

The product of its digits is 1504935936, while the sum is 76.

The spelling of 7929286428649 in words is "seven trillion, nine hundred twenty-nine billion, two hundred eighty-six million, four hundred twenty-eight thousand, six hundred forty-nine".