499101621 has 8 divisors (see below), whose sum is σ = 683454624. Its totient is φ = 323741520.

The previous prime is 499101553. The next prime is 499101637. The reversal of 499101621 is 126101994.

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

It is not a de Polignac number, because 499101621 - 2¹⁸ = 498839477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499101661) 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, 2248095 + ... + 2248316.

It is an arithmetic number, because the mean of its divisors is an integer number (85431828).

Almost surely, 2^499101621 is an apocalyptic number.

It is an amenable number.

499101621 is a deficient number, since it is larger than the sum of its proper divisors (184353003).

499101621 is a wasteful number, since it uses less digits than its factorization.

499101621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4496451.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 499101621 is about 22340.5823782640. The cubic root of 499101621 is about 793.2248784058.

The spelling of 499101621 in words is "four hundred ninety-nine million, one hundred one thousand, six hundred twenty-one".