499950001 has 4 divisors (see below), whose sum is σ = 500021604. Its totient is φ = 499878400.

The previous prime is 499949993. The next prime is 499950019. The reversal of 499950001 is 100059994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 278088976 + 221861025 = 16676^2 + 14895^2 .

It is a cyclic number.

It is not a de Polignac number, because 499950001 - 2³ = 499949993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499950041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24040 + ... + 39721.

It is an arithmetic number, because the mean of its divisors is an integer number (125005401).

Almost surely, 2^499950001 is an apocalyptic number.

499950001 is the 10000-th centered decagonal number.

It is an amenable number.

499950001 is a deficient number, since it is larger than the sum of its proper divisors (71603).

499950001 is an equidigital number, since it uses as much as digits as its factorization.

499950001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71602.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 499950001 is about 22359.5617354187. The cubic root of 499950001 is about 793.6740689471.

The spelling of 499950001 in words is "four hundred ninety-nine million, nine hundred fifty thousand, one".