388553897 has 2 divisors, whose sum is σ = 388553898. Its totient is φ = 388553896.

The previous prime is 388553813. The next prime is 388553903. The reversal of 388553897 is 798355883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383337241 + 5216656 = 19579^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 388553897 - 2²⁸ = 120118441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (388573897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194276948 + 194276949.

It is an arithmetic number, because the mean of its divisors is an integer number (194276949).

Almost surely, 2^388553897 is an apocalyptic number.

It is an amenable number.

388553897 is a deficient number, since it is larger than the sum of its proper divisors (1).

388553897 is an equidigital number, since it uses as much as digits as its factorization.

388553897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 56.

The square root of 388553897 is about 19711.7705191594. The cubic root of 388553897 is about 729.7102102410.

The spelling of 388553897 in words is "three hundred eighty-eight million, five hundred fifty-three thousand, eight hundred ninety-seven".