388058993 has 4 divisors (see below), whose sum is σ = 443496000. Its totient is φ = 332621988.

The previous prime is 388058971. The next prime is 388059011. The reversal of 388058993 is 399850883.

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, and also an emirpimes, since its reverse is a distinct semiprime: 399850883 = 23 ⋅17384821.

It is a cyclic number.

It is not a de Polignac number, because 388058993 - 2⁶ = 388058929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388058903) 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, 27718493 + ... + 27718506.

It is an arithmetic number, because the mean of its divisors is an integer number (110874000).

Almost surely, 2^388058993 is an apocalyptic number.

It is an amenable number.

388058993 is a deficient number, since it is larger than the sum of its proper divisors (55437007).

388058993 is an equidigital number, since it uses as much as digits as its factorization.

388058993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55437006.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 388058993 is about 19699.2130045847. The cubic root of 388058993 is about 729.4002661632.

The spelling of 388058993 in words is "three hundred eighty-eight million, fifty-eight thousand, nine hundred ninety-three".