36779969 has 2 divisors, whose sum is σ = 36779970. Its totient is φ = 36779968.

The previous prime is 36779957. The next prime is 36779971. The reversal of 36779969 is 96997763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33930625 + 2849344 = 5825^2 + 1688^2 .

It is an emirp because it is prime and its reverse (96997763) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36779969 - 2⁸ = 36779713 is a prime.

It is a super-2 number, since 2×36779969² = 2705532239281922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 36779971, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36779929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18389984 + 18389985.

It is an arithmetic number, because the mean of its divisors is an integer number (18389985).

Almost surely, 2^36779969 is an apocalyptic number.

It is an amenable number.

36779969 is a deficient number, since it is larger than the sum of its proper divisors (1).

36779969 is an equidigital number, since it uses as much as digits as its factorization.

36779969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3857868, while the sum is 56.

The square root of 36779969 is about 6064.6491242280. The cubic root of 36779969 is about 332.5603380427.

The spelling of 36779969 in words is "thirty-six million, seven hundred seventy-nine thousand, nine hundred sixty-nine".