434840 has 32 divisors (see below), whose sum is σ = 1118880. Its totient is φ = 148992.

The previous prime is 434839. The next prime is 434849. The reversal of 434840 is 48434.

434840 = T₁₂₇ + T₁₂₈ + ... + T₁₆₆.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (34965).

2⁴³⁴⁸⁴⁰ is an apocalyptic number.

434840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

434840 is an abundant number, since it is smaller than the sum of its proper divisors (684040).

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

434840 is a wasteful number, since it uses less digits than its factorization.

434840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 434840 is about 659.4239910710. The cubic root of 434840 is about 75.7605575877.

The spelling of 434840 in words is "four hundred thirty-four thousand, eight hundred forty".