384990626 has 16 divisors (see below), whose sum is σ = 581828184. Its totient is φ = 191053824.

The previous prime is 384990623. The next prime is 384990637. The reversal of 384990626 is 626099483.

It can be written as a sum of positive squares in 4 ways, for example, as 211673401 + 173317225 = 14549^2 + 13165^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (384990623) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 159686 + ... + 162078.

Almost surely, 2^384990626 is an apocalyptic number.

384990626 is a deficient number, since it is larger than the sum of its proper divisors (196837558).

384990626 is a wasteful number, since it uses less digits than its factorization.

384990626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 384990626 is about 19621.1779972559. The cubic root of 384990626 is about 727.4727306020.

The spelling of 384990626 in words is "three hundred eighty-four million, nine hundred ninety thousand, six hundred twenty-six".