7926140449 has 4 divisors (see below), whose sum is σ = 7926550164. Its totient is φ = 7925730736.

The previous prime is 7926140441. The next prime is 7926140461. The reversal of 7926140449 is 9440416297.

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 4737844224 + 3188296225 = 68832^2 + 56465^2 .

It is a cyclic number.

It is not a de Polignac number, because 7926140449 - 2³ = 7926140441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7926140399 and 7926140408.

It is not an unprimeable number, because it can be changed into a prime (7926140441) 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, 174322 + ... + 215035.

It is an arithmetic number, because the mean of its divisors is an integer number (1981637541).

Almost surely, 2^7926140449 is an apocalyptic number.

It is an amenable number.

7926140449 is a deficient number, since it is larger than the sum of its proper divisors (409715).

7926140449 is a wasteful number, since it uses less digits than its factorization.

7926140449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409714.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 7926140449 is about 89028.8742431353. The cubic root of 7926140449 is about 1993.8259978774.

The spelling of 7926140449 in words is "seven billion, nine hundred twenty-six million, one hundred forty thousand, four hundred forty-nine".