499097940 has 96 divisors (see below), whose sum is σ = 1528136064. Its totient is φ = 120706560.

The previous prime is 499097939. The next prime is 499097981. The reversal of 499097940 is 49790994.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446262 + ... + 447378.

It is an arithmetic number, because the mean of its divisors is an integer number (15918084).

Almost surely, 2^499097940 is an apocalyptic number.

It is a pronic number, being equal to 22340×22341.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499097940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764068032).

499097940 is an abundant number, since it is smaller than the sum of its proper divisors (1029038124).

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

499097940 is a wasteful number, since it uses less digits than its factorization.

499097940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1815 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 499097940 is about 22340.4999944048. The cubic root of 499097940 is about 793.2229283234. Note that the first 3 decimals are identical.

The spelling of 499097940 in words is "four hundred ninety-nine million, ninety-seven thousand, nine hundred forty".