499961040 has 80 divisors (see below), whose sum is σ = 1553472000. Its totient is φ = 133014016.

The previous prime is 499961039. The next prime is 499961047. The reversal of 499961040 is 40169994.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×499961040² = 499922083035763200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 499960983 and 499961001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499961047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112786 + ... + 117134.

It is an arithmetic number, because the mean of its divisors is an integer number (19418400).

Almost surely, 2^499961040 is an apocalyptic number.

499961040 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 499961040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776736000).

499961040 is an abundant number, since it is smaller than the sum of its proper divisors (1053510960).

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

499961040 is a wasteful number, since it uses less digits than its factorization.

499961040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844 (or 4838 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 499961040 is about 22359.8085859428. The cubic root of 499961040 is about 793.6799104003.

The spelling of 499961040 in words is "four hundred ninety-nine million, nine hundred sixty-one thousand, forty".