964869991 has 16 divisors (see below), whose sum is σ = 1024452000. Its totient is φ = 907175808.

The previous prime is 964869977. The next prime is 964870021. The reversal of 964869991 is 199968469.

It is a cyclic number.

It is not a de Polignac number, because 964869991 - 2⁷ = 964869863 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 (964869911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494085 + ... + 496033.

It is an arithmetic number, because the mean of its divisors is an integer number (64028250).

Almost surely, 2^964869991 is an apocalyptic number.

964869991 is a deficient number, since it is larger than the sum of its proper divisors (59582009).

964869991 is a wasteful number, since it uses less digits than its factorization.

964869991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418.

The product of its digits is 7558272, while the sum is 61.

The square root of 964869991 is about 31062.3564946383. The cubic root of 964869991 is about 988.1501322854.

The spelling of 964869991 in words is "nine hundred sixty-four million, eight hundred sixty-nine thousand, nine hundred ninety-one".