6979381 has 2 divisors, whose sum is σ = 6979382. Its totient is φ = 6979380.

The previous prime is 6979363. The next prime is 6979391. The reversal of 6979381 is 1839796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6812100 + 167281 = 2610^2 + 409^2 .

It is a cyclic number.

It is not a de Polignac number, because 6979381 - 2⁹ = 6978869 is a prime.

It is a super-2 number, since 2×6979381² = 97423518286322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6979361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3489690 + 3489691.

It is an arithmetic number, because the mean of its divisors is an integer number (3489691).

Almost surely, 2^6979381 is an apocalyptic number.

It is an amenable number.

6979381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6979381 is an equidigital number, since it uses as much as digits as its factorization.

6979381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 6979381 is about 2641.8518126496. The cubic root of 6979381 is about 191.1051110454.

The spelling of 6979381 in words is "six million, nine hundred seventy-nine thousand, three hundred eighty-one".