491937400 has 48 divisors (see below), whose sum is σ = 1145283840. Its totient is φ = 196512000.

The previous prime is 491937377. The next prime is 491937403. The reversal of 491937400 is 4739194.

It is a super-3 number, since 3×491937400³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 491937400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491937403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229132 + ... + 231268.

It is an arithmetic number, because the mean of its divisors is an integer number (23860080).

Almost surely, 2^491937400 is an apocalyptic number.

491937400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491937400 is an abundant number, since it is smaller than the sum of its proper divisors (653346440).

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

491937400 is a wasteful number, since it uses less digits than its factorization.

491937400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304 (or 3295 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 491937400 is about 22179.6618549517. The cubic root of 491937400 is about 789.4111940089.

The spelling of 491937400 in words is "four hundred ninety-one million, nine hundred thirty-seven thousand, four hundred".