36872989 has 2 divisors, whose sum is σ = 36872990. Its totient is φ = 36872988.

The previous prime is 36872987. The next prime is 36872993. The reversal of 36872989 is 98927863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18852964 + 18020025 = 4342^2 + 4245^2 .

It is an emirp because it is prime and its reverse (98927863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36872989 - 2¹ = 36872987 is a prime.

Together with 36872987, 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 (36872987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18436494 + 18436495.

It is an arithmetic number, because the mean of its divisors is an integer number (18436495).

Almost surely, 2^36872989 is an apocalyptic number.

It is an amenable number.

36872989 is a deficient number, since it is larger than the sum of its proper divisors (1).

36872989 is an equidigital number, since it uses as much as digits as its factorization.

36872989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 36872989 is about 6072.3133153684. The cubic root of 36872989 is about 332.8404608114.

The spelling of 36872989 in words is "thirty-six million, eight hundred seventy-two thousand, nine hundred eighty-nine".