9973139 has 4 divisors (see below), whose sum is σ = 10879800. Its totient is φ = 9066480.

The previous prime is 9973133. The next prime is 9973147. The reversal of 9973139 is 9313799.

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

It is a cyclic number.

It is not a de Polignac number, because 9973139 - 2⁴ = 9973123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9973096 and 9973105.

It is not an unprimeable number, because it can be changed into a prime (9973133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453314 + ... + 453335.

It is an arithmetic number, because the mean of its divisors is an integer number (2719950).

Almost surely, 2^9973139 is an apocalyptic number.

9973139 is a deficient number, since it is larger than the sum of its proper divisors (906661).

9973139 is a wasteful number, since it uses less digits than its factorization.

9973139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906660.

The product of its digits is 45927, while the sum is 41.

The square root of 9973139 is about 3158.0277072882. The cubic root of 9973139 is about 215.2503951273.

The spelling of 9973139 in words is "nine million, nine hundred seventy-three thousand, one hundred thirty-nine".