8373981 has 16 divisors (see below), whose sum is σ = 13920768. Its totient is φ = 4350000.

The previous prime is 8373971. The next prime is 8373983. The reversal of 8373981 is 1893738.

It is not a de Polignac number, because 8373981 - 2⁶ = 8373917 is a prime.

It is a super-2 number, since 2×8373981² = 140247115576722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8373983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17895 + ... + 18356.

It is an arithmetic number, because the mean of its divisors is an integer number (870048).

Almost surely, 2^8373981 is an apocalyptic number.

It is an amenable number.

8373981 is a deficient number, since it is larger than the sum of its proper divisors (5546787).

8373981 is a wasteful number, since it uses less digits than its factorization.

8373981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36272.

The product of its digits is 36288, while the sum is 39.

The square root of 8373981 is about 2893.7831639568. The cubic root of 8373981 is about 203.0691684345.

The spelling of 8373981 in words is "eight million, three hundred seventy-three thousand, nine hundred eighty-one".