388670797 has 2 divisors, whose sum is σ = 388670798. Its totient is φ = 388670796.

The previous prime is 388670773. The next prime is 388670869. The reversal of 388670797 is 797076883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290838916 + 97831881 = 17054^2 + 9891^2 .

It is an emirp because it is prime and its reverse (797076883) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388670797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388670747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194335398 + 194335399.

It is an arithmetic number, because the mean of its divisors is an integer number (194335399).

Almost surely, 2^388670797 is an apocalyptic number.

It is an amenable number.

388670797 is a deficient number, since it is larger than the sum of its proper divisors (1).

388670797 is an equidigital number, since it uses as much as digits as its factorization.

388670797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The square root of 388670797 is about 19714.7355295474. The cubic root of 388670797 is about 729.7833829042.

The spelling of 388670797 in words is "three hundred eighty-eight million, six hundred seventy thousand, seven hundred ninety-seven".