6988744393 has 2 divisors, whose sum is σ = 6988744394. Its totient is φ = 6988744392.

The previous prime is 6988744351. The next prime is 6988744453. The reversal of 6988744393 is 3934478896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6617334409 + 371409984 = 81347^2 + 19272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6988744393 is a prime.

It is not a weakly prime, because it can be changed into another prime (6988744303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494372196 + 3494372197.

It is an arithmetic number, because the mean of its divisors is an integer number (3494372197).

Almost surely, 2^6988744393 is an apocalyptic number.

It is an amenable number.

6988744393 is a deficient number, since it is larger than the sum of its proper divisors (1).

6988744393 is an equidigital number, since it uses as much as digits as its factorization.

6988744393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 61.

The square root of 6988744393 is about 83598.7104745043. The cubic root of 6988744393 is about 1911.9053374270.

The spelling of 6988744393 in words is "six billion, nine hundred eighty-eight million, seven hundred forty-four thousand, three hundred ninety-three".