499440 has 40 divisors (see below), whose sum is σ = 1549008. Its totient is φ = 133120.

The previous prime is 499439. The next prime is 499459. The reversal of 499440 is 44994.

499440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 499398 and 499407.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499440.

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, 801 + ... + 1280.

2⁴⁹⁹⁴⁴⁰ is an apocalyptic number.

499440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

499440 is an abundant number, since it is smaller than the sum of its proper divisors (1049568).

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

499440 is a wasteful number, since it uses less digits than its factorization.

499440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 499440 is about 706.7106904526. The cubic root of 499440 is about 79.3404100428.

It can be divided in two parts, 499 and 440, that added together give a palindrome (939).

The spelling of 499440 in words is "four hundred ninety-nine thousand, four hundred forty".