434978840 has 32 divisors (see below), whose sum is σ = 1002576960. Its totient is φ = 169747200.

The previous prime is 434978833. The next prime is 434978879. The reversal of 434978840 is 48879434.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130976 + ... + 134255.

It is an arithmetic number, because the mean of its divisors is an integer number (31330530).

Almost surely, 2^434978840 is an apocalyptic number.

434978840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

434978840 is an abundant number, since it is smaller than the sum of its proper divisors (567598120).

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

434978840 is a wasteful number, since it uses less digits than its factorization.

434978840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265283 (or 265279 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 434978840 is about 20856.1463362722. The cubic root of 434978840 is about 757.6861992212.

The spelling of 434978840 in words is "four hundred thirty-four million, nine hundred seventy-eight thousand, eight hundred forty".