966849989 has 4 divisors (see below), whose sum is σ = 1104971424. Its totient is φ = 828728556.

The previous prime is 966849931. The next prime is 966849991. The reversal of 966849989 is 989948669.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 966849989 - 2⁸ = 966849733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966849889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69060707 + ... + 69060720.

It is an arithmetic number, because the mean of its divisors is an integer number (276242856).

Almost surely, 2^966849989 is an apocalyptic number.

It is an amenable number.

966849989 is a deficient number, since it is larger than the sum of its proper divisors (138121435).

966849989 is a wasteful number, since it uses less digits than its factorization.

966849989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138121434.

The product of its digits is 60466176, while the sum is 68.

The square root of 966849989 is about 31094.2115031078. The cubic root of 966849989 is about 988.8255940921.

The spelling of 966849989 in words is "nine hundred sixty-six million, eight hundred forty-nine thousand, nine hundred eighty-nine".