388265497 has 2 divisors, whose sum is σ = 388265498. Its totient is φ = 388265496.

The previous prime is 388265491. The next prime is 388265539. The reversal of 388265497 is 794562883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386358336 + 1907161 = 19656^2 + 1381^2 .

It is an emirp because it is prime and its reverse (794562883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388265497 - 2¹⁵ = 388232729 is a prime.

It is not a weakly prime, because it can be changed into another prime (388265491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194132748 + 194132749.

It is an arithmetic number, because the mean of its divisors is an integer number (194132749).

Almost surely, 2^388265497 is an apocalyptic number.

It is an amenable number.

388265497 is a deficient number, since it is larger than the sum of its proper divisors (1).

388265497 is an equidigital number, since it uses as much as digits as its factorization.

388265497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The square root of 388265497 is about 19704.4537351331. The cubic root of 388265497 is about 729.5296256722.

The spelling of 388265497 in words is "three hundred eighty-eight million, two hundred sixty-five thousand, four hundred ninety-seven".