499981001 has 8 divisors (see below), whose sum is σ = 546478464. Its totient is φ = 454631760.

The previous prime is 499980997. The next prime is 499981021. The reversal of 499981001 is 100189994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 499981001 - 2² = 499980997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 499981001.

It is not an unprimeable number, because it can be changed into a prime (499981021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286145 + ... + 287886.

It is an arithmetic number, because the mean of its divisors is an integer number (68309808).

Almost surely, 2^499981001 is an apocalyptic number.

It is an amenable number.

499981001 is a deficient number, since it is larger than the sum of its proper divisors (46497463).

499981001 is a wasteful number, since it uses less digits than its factorization.

499981001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574111.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 499981001 is about 22360.2549404071. The cubic root of 499981001 is about 793.6904728459.

The spelling of 499981001 in words is "four hundred ninety-nine million, nine hundred eighty-one thousand, one".