4397985438 has 64 divisors (see below), whose sum is σ = 11320197120. Its totient is φ = 1105480800.

The previous prime is 4397985367. The next prime is 4397985451. The reversal of 4397985438 is 8345897934.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 139218 + ... + 167861.

It is an arithmetic number, because the mean of its divisors is an integer number (176878080).

Almost surely, 2^4397985438 is an apocalyptic number.

4397985438 is an abundant number, since it is smaller than the sum of its proper divisors (6922211682).

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

4397985438 is a wasteful number, since it uses less digits than its factorization.

4397985438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307133.

The product of its digits is 26127360, while the sum is 60.

The square root of 4397985438 is about 66317.3087361060. The cubic root of 4397985438 is about 1638.3924161302.

The spelling of 4397985438 in words is "four billion, three hundred ninety-seven million, nine hundred eighty-five thousand, four hundred thirty-eight".