434394840 has 96 divisors (see below), whose sum is σ = 1432473840. Its totient is φ = 105304320.

The previous prime is 434394833. The next prime is 434394841. The reversal of 434394840 is 48493434.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434394841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 439 + ... + 29478.

Almost surely, 2^434394840 is an apocalyptic number.

434394840 is a gapful number since it is divisible by the number (40) 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 434394840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716236920).

434394840 is an abundant number, since it is smaller than the sum of its proper divisors (998079000).

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

434394840 is a wasteful number, since it uses less digits than its factorization.

434394840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29953 (or 29938 counting only the distinct ones).

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

The square root of 434394840 is about 20842.1409648817. The cubic root of 434394840 is about 757.3469590291.

The spelling of 434394840 in words is "four hundred thirty-four million, three hundred ninety-four thousand, eight hundred forty".