490399843 has 4 divisors (see below), whose sum is σ = 490515480. Its totient is φ = 490284208.

The previous prime is 490399837. The next prime is 490399891. The reversal of 490399843 is 348993094.

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

It is a cyclic number.

It is not a de Polignac number, because 490399843 - 2¹⁷ = 490268771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490399043) 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, 51205 + ... + 60022.

It is an arithmetic number, because the mean of its divisors is an integer number (122628870).

Almost surely, 2^490399843 is an apocalyptic number.

490399843 is a deficient number, since it is larger than the sum of its proper divisors (115637).

490399843 is a wasteful number, since it uses less digits than its factorization.

490399843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115636.

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 490399843 is about 22144.9733122440. The cubic root of 490399843 is about 788.5878972144.

The spelling of 490399843 in words is "four hundred ninety million, three hundred ninety-nine thousand, eight hundred forty-three".