388476997 has 4 divisors (see below), whose sum is σ = 393948576. Its totient is φ = 383005420.

The previous prime is 388476961. The next prime is 388477003. The reversal of 388476997 is 799674883.

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 a cyclic number.

It is not a de Polignac number, because 388476997 - 2¹⁹ = 387952709 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 (388476947) 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, 2735683 + ... + 2735824.

It is an arithmetic number, because the mean of its divisors is an integer number (98487144).

Almost surely, 2^388476997 is an apocalyptic number.

It is an amenable number.

388476997 is a deficient number, since it is larger than the sum of its proper divisors (5471579).

388476997 is an equidigital number, since it uses as much as digits as its factorization.

388476997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471578.

The product of its digits is 18289152, while the sum is 61.

The square root of 388476997 is about 19709.8198114544. The cubic root of 388476997 is about 729.6620672695.

The spelling of 388476997 in words is "three hundred eighty-eight million, four hundred seventy-six thousand, nine hundred ninety-seven".