491430 has 16 divisors (see below), whose sum is σ = 1179504. Its totient is φ = 131040.

The previous prime is 491429. The next prime is 491461. The reversal of 491430 is 34194.

It is a junction number, because it is equal to n+sod(n) for n = 491397 and 491406.

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, 8161 + ... + 8220.

It is an arithmetic number, because the mean of its divisors is an integer number (73719).

2⁴⁹¹⁴³⁰ is an apocalyptic number.

491430 is an abundant number, since it is smaller than the sum of its proper divisors (688074).

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

491430 is a wasteful number, since it uses less digits than its factorization.

491430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16391.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 491430 is about 701.0206844309. The cubic root of 491430 is about 78.9139692641.

The spelling of 491430 in words is "four hundred ninety-one thousand, four hundred thirty".