491424486 has 64 divisors (see below), whose sum is σ = 1178136576. Its totient is φ = 133610400.

The previous prime is 491424481. The next prime is 491424503. The reversal of 491424486 is 684424194.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491424481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202621 + ... + 205031.

It is an arithmetic number, because the mean of its divisors is an integer number (18408384).

Almost surely, 2^491424486 is an apocalyptic number.

491424486 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 491424486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589068288).

491424486 is an abundant number, since it is smaller than the sum of its proper divisors (686712090).

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

491424486 is a wasteful number, since it uses less digits than its factorization.

491424486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657.

The product of its digits is 221184, while the sum is 42.

The square root of 491424486 is about 22168.0961293477. The cubic root of 491424486 is about 789.1367411643.

It can be divided in two parts, 49142 and 4486, that added together give a triangular number (53628 = T₃₂₇).

The spelling of 491424486 in words is "four hundred ninety-one million, four hundred twenty-four thousand, four hundred eighty-six".