49918669 has 2 divisors, whose sum is σ = 49918670. Its totient is φ = 49918668.

The previous prime is 49918667. The next prime is 49918691. The reversal of 49918669 is 96681994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45765225 + 4153444 = 6765^2 + 2038^2 .

It is a cyclic number.

It is not a de Polignac number, because 49918669 - 2¹ = 49918667 is a prime.

It is a super-2 number, since 2×49918669² = 4983747029463122, which contains 22 as substring.

Together with 49918667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49918667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24959334 + 24959335.

It is an arithmetic number, because the mean of its divisors is an integer number (24959335).

Almost surely, 2^49918669 is an apocalyptic number.

It is an amenable number.

49918669 is a deficient number, since it is larger than the sum of its proper divisors (1).

49918669 is an equidigital number, since it uses as much as digits as its factorization.

49918669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 52.

The square root of 49918669 is about 7065.3145011386. The cubic root of 49918669 is about 368.2032908161.

The spelling of 49918669 in words is "forty-nine million, nine hundred eighteen thousand, six hundred sixty-nine".