497863440 has 120 divisors (see below), whose sum is σ = 1681767360. Its totient is φ = 131987712.

The previous prime is 497863409. The next prime is 497863447. The reversal of 497863440 is 44368794.

497863440 is a `hidden beast` number, since 4 + 9 + 7 + 8 + 634 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (497863447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126949 + ... + 130811.

It is an arithmetic number, because the mean of its divisors is an integer number (14014728).

Almost surely, 2^497863440 is an apocalyptic number.

497863440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497863440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840883680).

497863440 is an abundant number, since it is smaller than the sum of its proper divisors (1183903920).

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

497863440 is a wasteful number, since it uses less digits than its factorization.

497863440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061 (or 4052 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 497863440 is about 22312.8536946756. The cubic root of 497863440 is about 792.5683859957.

The spelling of 497863440 in words is "four hundred ninety-seven million, eight hundred sixty-three thousand, four hundred forty".