494989939 has 2 divisors, whose sum is σ = 494989940. Its totient is φ = 494989938.

The previous prime is 494989921. The next prime is 494990011. The reversal of 494989939 is 939989494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 494989939 - 2¹¹ = 494987891 is a prime.

It is a super-2 number, since 2×494989939² = 490030079422447442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (494989639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247494969 + 247494970.

It is an arithmetic number, because the mean of its divisors is an integer number (247494970).

Almost surely, 2^494989939 is an apocalyptic number.

494989939 is a deficient number, since it is larger than the sum of its proper divisors (1).

494989939 is an equidigital number, since it uses as much as digits as its factorization.

494989939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22674816, while the sum is 64.

The square root of 494989939 is about 22248.3693559775. The cubic root of 494989939 is about 791.0406299070.

The spelling of 494989939 in words is "four hundred ninety-four million, nine hundred eighty-nine thousand, nine hundred thirty-nine".