7716049391 has 2 divisors, whose sum is σ = 7716049392. Its totient is φ = 7716049390.

The previous prime is 7716049381. The next prime is 7716049417. The reversal of 7716049391 is 1939406177.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7716049391 - 2²² = 7711855087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7716049331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3858024695 + 3858024696.

It is an arithmetic number, because the mean of its divisors is an integer number (3858024696).

Almost surely, 2^7716049391 is an apocalyptic number.

7716049391 is a deficient number, since it is larger than the sum of its proper divisors (1).

7716049391 is an equidigital number, since it uses as much as digits as its factorization.

7716049391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 7716049391 is about 87841.0461629414. The cubic root of 7716049391 is about 1976.0518365350.

The spelling of 7716049391 in words is "seven billion, seven hundred sixteen million, forty-nine thousand, three hundred ninety-one".