498687864440 has 32 divisors (see below), whose sum is σ = 1122174162000. Its totient is φ = 199452662784.

The previous prime is 498687864439. The next prime is 498687864481. The reversal of 498687864440 is 44468786894.

It is a super-2 number, since 2×498687864440² (a number of 24 digits) contains 22 as substring.

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, 340970 + ... + 1055289.

Almost surely, 2^498687864440 is an apocalyptic number.

498687864440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

498687864440 is an abundant number, since it is smaller than the sum of its proper divisors (623486297560).

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

498687864440 is a wasteful number, since it uses less digits than its factorization.

498687864440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405199 (or 1405195 counting only the distinct ones).

The product of its (nonzero) digits is 297271296, while the sum is 68.

The spelling of 498687864440 in words is "four hundred ninety-eight billion, six hundred eighty-seven million, eight hundred sixty-four thousand, four hundred forty".