384047890 has 32 divisors (see below), whose sum is σ = 705038256. Its totient is φ = 150589440.

The previous prime is 384047879. The next prime is 384047891. The reversal of 384047890 is 98740483.

It can be written as a sum of positive squares in 8 ways, for example, as 358231329 + 25816561 = 18927^2 + 5081^2 .

It is not an unprimeable number, because it can be changed into a prime (384047891) 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 15 ways as a sum of consecutive naturals, for example, 124770 + ... + 127810.

Almost surely, 2^384047890 is an apocalyptic number.

384047890 is a deficient number, since it is larger than the sum of its proper divisors (320990366).

384047890 is a wasteful number, since it uses less digits than its factorization.

384047890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 384047890 is about 19597.1398423341. The cubic root of 384047890 is about 726.8784518161.

The spelling of 384047890 in words is "three hundred eighty-four million, forty-seven thousand, eight hundred ninety".