961985097 has 12 divisors (see below), whose sum is σ = 1449948864. Its totient is φ = 613439640.

The previous prime is 961985077. The next prime is 961985107. The reversal of 961985097 is 790589169.

It is not a de Polignac number, because 961985097 - 2¹⁰ = 961984073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (961985047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2323429 + ... + 2323842.

It is an arithmetic number, because the mean of its divisors is an integer number (120829072).

Almost surely, 2^961985097 is an apocalyptic number.

It is an amenable number.

961985097 is a deficient number, since it is larger than the sum of its proper divisors (487963767).

961985097 is a wasteful number, since it uses less digits than its factorization.

961985097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647300 (or 4647297 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The square root of 961985097 is about 31015.8845916089. The cubic root of 961985097 is about 987.1643157910.

The spelling of 961985097 in words is "nine hundred sixty-one million, nine hundred eighty-five thousand, ninety-seven".