67394489 has 2 divisors, whose sum is σ = 67394490. Its totient is φ = 67394488.

The previous prime is 67394473. The next prime is 67394491. The reversal of 67394489 is 98449376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46308025 + 21086464 = 6805^2 + 4592^2 .

It is a cyclic number.

It is not a de Polignac number, because 67394489 - 2⁴ = 67394473 is a prime.

It is a super-2 number, since 2×67394489² = 9084034295142242, which contains 22 as substring.

Together with 67394491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67394419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33697244 + 33697245.

It is an arithmetic number, because the mean of its divisors is an integer number (33697245).

Almost surely, 2^67394489 is an apocalyptic number.

It is an amenable number.

67394489 is a deficient number, since it is larger than the sum of its proper divisors (1).

67394489 is an equidigital number, since it uses as much as digits as its factorization.

67394489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 67394489 is about 8209.4146563564. The cubic root of 67394489 is about 406.9503830272.

The spelling of 67394489 in words is "sixty-seven million, three hundred ninety-four thousand, four hundred eighty-nine".