966672389 has 2 divisors, whose sum is σ = 966672390. Its totient is φ = 966672388.

The previous prime is 966672383. The next prime is 966672401. The reversal of 966672389 is 983276669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865830625 + 100841764 = 29425^2 + 10042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-966672389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966672383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483336194 + 483336195.

It is an arithmetic number, because the mean of its divisors is an integer number (483336195).

Almost surely, 2^966672389 is an apocalyptic number.

It is an amenable number.

966672389 is a deficient number, since it is larger than the sum of its proper divisors (1).

966672389 is an equidigital number, since it uses as much as digits as its factorization.

966672389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The square root of 966672389 is about 31091.3555349393. The cubic root of 966672389 is about 988.7650448233.

The spelling of 966672389 in words is "nine hundred sixty-six million, six hundred seventy-two thousand, three hundred eighty-nine".