388493745 has 16 divisors (see below), whose sum is σ = 621870912. Its totient is φ = 207103040.

The previous prime is 388493719. The next prime is 388493761. The reversal of 388493745 is 547394883.

It is not a de Polignac number, because 388493745 - 2¹⁴ = 388477361 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40075 + ... + 48815.

It is an arithmetic number, because the mean of its divisors is an integer number (38866932).

Almost surely, 2^388493745 is an apocalyptic number.

It is an amenable number.

388493745 is a deficient number, since it is larger than the sum of its proper divisors (233377167).

388493745 is a wasteful number, since it uses less digits than its factorization.

388493745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11712.

The product of its digits is 2903040, while the sum is 51.

The square root of 388493745 is about 19710.2446712363. The cubic root of 388493745 is about 729.6725528365.

The spelling of 388493745 in words is "three hundred eighty-eight million, four hundred ninety-three thousand, seven hundred forty-five".