6439734 has 24 divisors (see below), whose sum is σ = 15946320. Its totient is φ = 1839888.

The previous prime is 6439729. The next prime is 6439751. The reversal of 6439734 is 4379346.

6439734 is a `hidden beast` number, since 643 + 9 + 7 + 3 + 4 = 666.

It is a d-powerful number, because it can be written as 6⁴ + 4⁵ + 3¹³ + 9⁵ + 7² + 3¹⁴ + 4⁵ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25429 + ... + 25680.

It is an arithmetic number, because the mean of its divisors is an integer number (664430).

Almost surely, 2^6439734 is an apocalyptic number.

6439734 is an abundant number, since it is smaller than the sum of its proper divisors (9506586).

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

6439734 is a wasteful number, since it uses less digits than its factorization.

6439734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51124 (or 51121 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 6439734 is about 2537.6630982067. The cubic root of 6439734 is about 186.0469877820.

The spelling of 6439734 in words is "six million, four hundred thirty-nine thousand, seven hundred thirty-four".