499980997 has 2 divisors, whose sum is σ = 499980998. Its totient is φ = 499980996.

The previous prime is 499980983. The next prime is 499981021. The reversal of 499980997 is 799089994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492440481 + 7540516 = 22191^2 + 2746^2 .

It is a cyclic number.

It is not a de Polignac number, because 499980997 - 2²⁷ = 365763269 is a prime.

It is a super-2 number, since 2×499980997² = 499961994722228018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499980977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249990498 + 249990499.

It is an arithmetic number, because the mean of its divisors is an integer number (249990499).

Almost surely, 2^499980997 is an apocalyptic number.

It is an amenable number.

499980997 is a deficient number, since it is larger than the sum of its proper divisors (1).

499980997 is an equidigital number, since it uses as much as digits as its factorization.

499980997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The square root of 499980997 is about 22360.2548509627. The cubic root of 499980997 is about 793.6904707293.

The spelling of 499980997 in words is "four hundred ninety-nine million, nine hundred eighty thousand, nine hundred ninety-seven".