389444430 has 16 divisors (see below), whose sum is σ = 934666704. Its totient is φ = 103851840.

The previous prime is 389444399. The next prime is 389444431. The reversal of 389444430 is 34444983.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389444431) 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, 6490711 + ... + 6490770.

It is an arithmetic number, because the mean of its divisors is an integer number (58416669).

Almost surely, 2^389444430 is an apocalyptic number.

389444430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389444430 is an abundant number, since it is smaller than the sum of its proper divisors (545222274).

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

389444430 is a wasteful number, since it uses less digits than its factorization.

389444430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12981491.

The product of its (nonzero) digits is 165888, while the sum is 39.

The square root of 389444430 is about 19734.3464548487. The cubic root of 389444430 is about 730.2672631201.

The spelling of 389444430 in words is "three hundred eighty-nine million, four hundred forty-four thousand, four hundred thirty".