6860389 has 2 divisors, whose sum is σ = 6860390. Its totient is φ = 6860388.

The previous prime is 6860353. The next prime is 6860419. The reversal of 6860389 is 9830686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5919489 + 940900 = 2433^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 6860389 - 2²¹ = 4763237 is a prime.

It is a super-3 number, since 3×6860389³ (a number of 21 digits) contains 333 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 (6860989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430194 + 3430195.

It is an arithmetic number, because the mean of its divisors is an integer number (3430195).

Almost surely, 2^6860389 is an apocalyptic number.

It is an amenable number.

6860389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6860389 is an equidigital number, since it uses as much as digits as its factorization.

6860389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 6860389 is about 2619.2344301341. The cubic root of 6860389 is about 190.0128246191.

The spelling of 6860389 in words is "six million, eight hundred sixty thousand, three hundred eighty-nine".