384979819 has 12 divisors (see below), whose sum is σ = 467306064. Its totient is φ = 315634704.

The previous prime is 384979801. The next prime is 384979849. The reversal of 384979819 is 918979483.

It is a happy number.

It is not a de Polignac number, because 384979819 - 2¹³ = 384971627 is a prime.

It is a super-2 number, since 2×384979819² = 296418922074545522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384979849) 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 11 ways as a sum of consecutive naturals, for example, 169672 + ... + 171925.

It is an arithmetic number, because the mean of its divisors is an integer number (38942172).

Almost surely, 2^384979819 is an apocalyptic number.

384979819 is a deficient number, since it is larger than the sum of its proper divisors (82326245).

384979819 is a wasteful number, since it uses less digits than its factorization.

384979819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341634 (or 341627 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 58.

The square root of 384979819 is about 19620.9026041107. The cubic root of 384979819 is about 727.4659236213.

The spelling of 384979819 in words is "three hundred eighty-four million, nine hundred seventy-nine thousand, eight hundred nineteen".