499258890 has 160 divisors (see below), whose sum is σ = 1531308240. Its totient is φ = 115623936.

The previous prime is 499258883. The next prime is 499258891. The reversal of 499258890 is 98852994.

It can be written as a sum of positive squares in 8 ways, for example, as 222934761 + 276324129 = 14931^2 + 16623^2 .

It is a super-3 number, since 3×499258890³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (499258891) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 177616 + ... + 180404.

Almost surely, 2^499258890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499258890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765654120).

499258890 is an abundant number, since it is smaller than the sum of its proper divisors (1032049350).

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

499258890 is a wasteful number, since it uses less digits than its factorization.

499258890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838 (or 2829 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 499258890 is about 22344.1019063197. The cubic root of 499258890 is about 793.3081858108.

The spelling of 499258890 in words is "four hundred ninety-nine million, two hundred fifty-eight thousand, eight hundred ninety".