949616639 has 2 divisors, whose sum is σ = 949616640. Its totient is φ = 949616638.

The previous prime is 949616627. The next prime is 949616641. The reversal of 949616639 is 936616949.

It is a strong prime.

It is an emirp because it is prime and its reverse (936616949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 949616639 - 2²⁸ = 681181183 is a prime.

It is a super-2 number, since 2×949616639² = 1803543522131312642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 949616641, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (949616669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474808319 + 474808320.

It is an arithmetic number, because the mean of its divisors is an integer number (474808320).

Almost surely, 2^949616639 is an apocalyptic number.

949616639 is a deficient number, since it is larger than the sum of its proper divisors (1).

949616639 is an equidigital number, since it uses as much as digits as its factorization.

949616639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 53.

The square root of 949616639 is about 30815.8504507015. The cubic root of 949616639 is about 982.9153223847.

The spelling of 949616639 in words is "nine hundred forty-nine million, six hundred sixteen thousand, six hundred thirty-nine".