7973381 has 4 divisors (see below), whose sum is σ = 8586732. Its totient is φ = 7360032.

The previous prime is 7973377. The next prime is 7973401. The reversal of 7973381 is 1833797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1833797 = 7 ⋅261971.

It can be written as a sum of positive squares in 2 ways, for example, as 410881 + 7562500 = 641^2 + 2750^2 .

It is a cyclic number.

It is not a de Polignac number, because 7973381 - 2² = 7973377 is a prime.

It is a super-2 number, since 2×7973381² = 127149609142322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7973321) 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, 306656 + ... + 306681.

It is an arithmetic number, because the mean of its divisors is an integer number (2146683).

Almost surely, 2^7973381 is an apocalyptic number.

It is an amenable number.

7973381 is a deficient number, since it is larger than the sum of its proper divisors (613351).

7973381 is a wasteful number, since it uses less digits than its factorization.

7973381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613350.

The product of its digits is 31752, while the sum is 38.

The square root of 7973381 is about 2823.7175850286. The cubic root of 7973381 is about 199.7779285125. Note that the first 3 decimals are identical.

The spelling of 7973381 in words is "seven million, nine hundred seventy-three thousand, three hundred eighty-one".