9973923 has 4 divisors (see below), whose sum is σ = 13298568. Its totient is φ = 6649280.

The previous prime is 9973921. The next prime is 9973933. The reversal of 9973923 is 3293799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3293799 = 3 ⋅1097933.

It is a cyclic number.

It is not a de Polignac number, because 9973923 - 2¹ = 9973921 is a prime.

9973923 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9973921) 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, 1662318 + ... + 1662323.

It is an arithmetic number, because the mean of its divisors is an integer number (3324642).

Almost surely, 2^9973923 is an apocalyptic number.

9973923 is a deficient number, since it is larger than the sum of its proper divisors (3324645).

9973923 is a wasteful number, since it uses less digits than its factorization.

9973923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324644.

The product of its digits is 91854, while the sum is 42.

The square root of 9973923 is about 3158.1518329555. The cubic root of 9973923 is about 215.2560353404.

The spelling of 9973923 in words is "nine million, nine hundred seventy-three thousand, nine hundred twenty-three".