7934389 has 2 divisors, whose sum is σ = 7934390. Its totient is φ = 7934388.

The previous prime is 7934387. The next prime is 7934413. The reversal of 7934389 is 9834397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4100625 + 3833764 = 2025^2 + 1958^2 .

It is a cyclic number.

It is not a de Polignac number, because 7934389 - 2¹ = 7934387 is a prime.

Together with 7934387, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 7⁸ + 9 + 3⁸ + 4⁴ + 3¹⁰ + 8⁷ + 9⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7934383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3967194 + 3967195.

It is an arithmetic number, because the mean of its divisors is an integer number (3967195).

Almost surely, 2^7934389 is an apocalyptic number.

It is an amenable number.

7934389 is a deficient number, since it is larger than the sum of its proper divisors (1).

7934389 is an equidigital number, since it uses as much as digits as its factorization.

7934389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The square root of 7934389 is about 2816.8047500670. The cubic root of 7934389 is about 199.4517400954.

The spelling of 7934389 in words is "seven million, nine hundred thirty-four thousand, three hundred eighty-nine".