9973771 has 8 divisors (see below), whose sum is σ = 10165824. Its totient is φ = 9783360.

The previous prime is 9973763. The next prime is 9973793. The reversal of 9973771 is 1773799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9973771 - 2³ = 9973763 is a prime.

It is a super-2 number, since 2×9973771² = 198952215920882, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9973751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22926 + ... + 23356.

It is an arithmetic number, because the mean of its divisors is an integer number (1270728).

Almost surely, 2^9973771 is an apocalyptic number.

9973771 is a deficient number, since it is larger than the sum of its proper divisors (192053).

9973771 is a wasteful number, since it uses less digits than its factorization.

9973771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821.

The product of its digits is 83349, while the sum is 43.

The square root of 9973771 is about 3158.1277681563. The cubic root of 9973771 is about 215.2549418528.

The spelling of 9973771 in words is "nine million, nine hundred seventy-three thousand, seven hundred seventy-one".