388868249 has 16 divisors (see below), whose sum is σ = 486082176. Its totient is φ = 302227200.

The previous prime is 388868243. The next prime is 388868267. The reversal of 388868249 is 942868883.

It is not a de Polignac number, because 388868249 - 2⁸ = 388867993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388868194 and 388868203.

It is not an unprimeable number, because it can be changed into a prime (388868243) 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, 24209 + ... + 36929.

It is an arithmetic number, because the mean of its divisors is an integer number (30380136).

Almost surely, 2^388868249 is an apocalyptic number.

It is an amenable number.

388868249 is a deficient number, since it is larger than the sum of its proper divisors (97213927).

388868249 is a wasteful number, since it uses less digits than its factorization.

388868249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13136.

The product of its digits is 5308416, while the sum is 56.

The square root of 388868249 is about 19719.7426200242. The cubic root of 388868249 is about 729.9069431640.

The spelling of 388868249 in words is "three hundred eighty-eight million, eight hundred sixty-eight thousand, two hundred forty-nine".