984943961 has 4 divisors (see below), whose sum is σ = 987766500. Its totient is φ = 982121424.

The previous prime is 984943937. The next prime is 984943969. The reversal of 984943961 is 169349489.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 771783961 + 213160000 = 27781^2 + 14600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984943961 is a prime.

It is a super-2 number, since 2×984943961² = 1940229212620739042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (984943969) 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, 1410746 + ... + 1411443.

It is an arithmetic number, because the mean of its divisors is an integer number (246941625).

Almost surely, 2^984943961 is an apocalyptic number.

It is an amenable number.

984943961 is a deficient number, since it is larger than the sum of its proper divisors (2822539).

984943961 is a wasteful number, since it uses less digits than its factorization.

984943961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822538.

The product of its digits is 1679616, while the sum is 53.

The square root of 984943961 is about 31383.8168647473. The cubic root of 984943961 is about 994.9559203724.

The spelling of 984943961 in words is "nine hundred eighty-four million, nine hundred forty-three thousand, nine hundred sixty-one".