388273249 has 16 divisors (see below), whose sum is σ = 482812288. Its totient is φ = 304031232.

The previous prime is 388273247. The next prime is 388273307. The reversal of 388273249 is 942372883.

388273249 is nontrivially palindromic in base 6.

It is a cyclic number.

It is not a de Polignac number, because 388273249 - 2¹ = 388273247 is a prime.

It is a super-2 number, since 2×388273249² = 301512231778032002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388273199 and 388273208.

It is not an unprimeable number, because it can be changed into a prime (388273243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13167 + ... + 30820.

It is an arithmetic number, because the mean of its divisors is an integer number (30175768).

Almost surely, 2^388273249 is an apocalyptic number.

It is an amenable number.

388273249 is a deficient number, since it is larger than the sum of its proper divisors (94539039).

388273249 is a wasteful number, since it uses less digits than its factorization.

388273249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44104.

The product of its digits is 580608, while the sum is 46.

The square root of 388273249 is about 19704.6504409492. The cubic root of 388273249 is about 729.5344808345.

The spelling of 388273249 in words is "three hundred eighty-eight million, two hundred seventy-three thousand, two hundred forty-nine".