7109381 has 2 divisors, whose sum is σ = 7109382. Its totient is φ = 7109380.

The previous prime is 7109371. The next prime is 7109387. The reversal of 7109381 is 1839017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6806881 + 302500 = 2609^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 7109381 - 2⁶ = 7109317 is a prime.

It is a super-2 number, since 2×7109381² = 101086596406322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7109387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3554690 + 3554691.

It is an arithmetic number, because the mean of its divisors is an integer number (3554691).

Almost surely, 2^7109381 is an apocalyptic number.

It is an amenable number.

7109381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7109381 is an equidigital number, since it uses as much as digits as its factorization.

7109381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 7109381 is about 2666.3422510998. The cubic root of 7109381 is about 192.2843461177.

The spelling of 7109381 in words is "seven million, one hundred nine thousand, three hundred eighty-one".