384999426 has 128 divisors (see below), whose sum is σ = 1014220800. Its totient is φ = 105986880.

The previous prime is 384999409. The next prime is 384999431. The reversal of 384999426 is 624999483.

384999426 is nontrivially palindromic in base 13.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1360281 + ... + 1360563.

It is an arithmetic number, because the mean of its divisors is an integer number (7923600).

Almost surely, 2^384999426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 384999426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507110400).

384999426 is an abundant number, since it is smaller than the sum of its proper divisors (629221374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

384999426 is a wasteful number, since it uses less digits than its factorization.

384999426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 415 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 384999426 is about 19621.4022434687. The cubic root of 384999426 is about 727.4782733441.

The spelling of 384999426 in words is "three hundred eighty-four million, nine hundred ninety-nine thousand, four hundred twenty-six".