388088229 has 4 divisors (see below), whose sum is σ = 517450976. Its totient is φ = 258725484.

The previous prime is 388088209. The next prime is 388088263. The reversal of 388088229 is 922880883.

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: 922880883 = 3 ⋅307626961.

It is not a de Polignac number, because 388088229 - 2²⁸ = 119652773 is a prime.

It is a super-2 number, since 2×388088229² = 301224946976712882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388088209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64681369 + ... + 64681374.

It is an arithmetic number, because the mean of its divisors is an integer number (129362744).

Almost surely, 2^388088229 is an apocalyptic number.

It is an amenable number.

388088229 is a deficient number, since it is larger than the sum of its proper divisors (129362747).

388088229 is a wasteful number, since it uses less digits than its factorization.

388088229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129362746.

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 388088229 is about 19699.9550507101. The cubic root of 388088229 is about 729.4185831468.

The spelling of 388088229 in words is "three hundred eighty-eight million, eighty-eight thousand, two hundred twenty-nine".