9735981 has 4 divisors (see below), whose sum is σ = 12981312. Its totient is φ = 6490652.

The previous prime is 9735949. The next prime is 9735991. The reversal of 9735981 is 1895379.

It is a happy number.

9735981 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 9735981 - 2⁵ = 9735949 is a prime.

It is a super-2 number, since 2×9735981² = 189578652064722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9735991) 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, 1622661 + ... + 1622666.

It is an arithmetic number, because the mean of its divisors is an integer number (3245328).

Almost surely, 2^9735981 is an apocalyptic number.

It is an amenable number.

9735981 is a deficient number, since it is larger than the sum of its proper divisors (3245331).

9735981 is a wasteful number, since it uses less digits than its factorization.

9735981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245330.

The product of its digits is 68040, while the sum is 42.

The square root of 9735981 is about 3120.2533550979. The cubic root of 9735981 is about 213.5304945409.

The spelling of 9735981 in words is "nine million, seven hundred thirty-five thousand, nine hundred eighty-one".