388579397 has 4 divisors (see below), whose sum is σ = 388723500. Its totient is φ = 388435296.

The previous prime is 388579391. The next prime is 388579403. The reversal of 388579397 is 793975883.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (388579391) and next prime (388579403).

It can be written as a sum of positive squares in 2 ways, for example, as 182628196 + 205951201 = 13514^2 + 14351^2 .

It is a cyclic number.

It is not a de Polignac number, because 388579397 - 2²⁴ = 371802181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388579391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67928 + ... + 73425.

It is an arithmetic number, because the mean of its divisors is an integer number (97180875).

Almost surely, 2^388579397 is an apocalyptic number.

It is an amenable number.

388579397 is a deficient number, since it is larger than the sum of its proper divisors (144103).

388579397 is a wasteful number, since it uses less digits than its factorization.

388579397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144102.

The product of its digits is 11430720, while the sum is 59.

The square root of 388579397 is about 19712.4173302008. The cubic root of 388579397 is about 729.7261730229.

The spelling of 388579397 in words is "three hundred eighty-eight million, five hundred seventy-nine thousand, three hundred ninety-seven".