389243736 has 96 divisors (see below), whose sum is σ = 1222890240. Its totient is φ = 109543104.

The previous prime is 389243711. The next prime is 389243741. The reversal of 389243736 is 637342983.

389243736 = T₂₅₈ + T₂₅₉ + ... + T₁₃₂₉.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 389243691 and 389243700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28005 + ... + 39531.

It is an arithmetic number, because the mean of its divisors is an integer number (12738440).

Almost surely, 2^389243736 is an apocalyptic number.

389243736 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389243736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611445120).

389243736 is an abundant number, since it is smaller than the sum of its proper divisors (833646504).

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

389243736 is a wasteful number, since it uses less digits than its factorization.

389243736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11613 (or 11606 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 389243736 is about 19729.2609086098. The cubic root of 389243736 is about 730.1417976880.

The spelling of 389243736 in words is "three hundred eighty-nine million, two hundred forty-three thousand, seven hundred thirty-six".