388797923 has 2 divisors, whose sum is σ = 388797924. Its totient is φ = 388797922.

The previous prime is 388797919. The next prime is 388797943. The reversal of 388797923 is 329797883.

It is a weak prime.

It is an emirp because it is prime and its reverse (329797883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388797923 - 2² = 388797919 is a prime.

It is a super-2 number, since 2×388797923² = 302327649858227858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (388797943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194398961 + 194398962.

It is an arithmetic number, because the mean of its divisors is an integer number (194398962).

Almost surely, 2^388797923 is an apocalyptic number.

388797923 is a deficient number, since it is larger than the sum of its proper divisors (1).

388797923 is an equidigital number, since it uses as much as digits as its factorization.

388797923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The square root of 388797923 is about 19717.9594025345. The cubic root of 388797923 is about 729.8629398025.

The spelling of 388797923 in words is "three hundred eighty-eight million, seven hundred ninety-seven thousand, nine hundred twenty-three".