388493697 has 4 divisors (see below), whose sum is σ = 517991600. Its totient is φ = 258995796.

The previous prime is 388493659. The next prime is 388493719. The reversal of 388493697 is 796394883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 388493697 - 2⁷ = 388493569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388493647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64748947 + ... + 64748952.

It is an arithmetic number, because the mean of its divisors is an integer number (129497900).

Almost surely, 2^388493697 is an apocalyptic number.

It is an amenable number.

388493697 is a deficient number, since it is larger than the sum of its proper divisors (129497903).

388493697 is a wasteful number, since it uses less digits than its factorization.

388493697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129497902.

The product of its digits is 7838208, while the sum is 57.

The square root of 388493697 is about 19710.2434535954. The cubic root of 388493697 is about 729.6725227851.

The spelling of 388493697 in words is "three hundred eighty-eight million, four hundred ninety-three thousand, six hundred ninety-seven".