67489129 has 2 divisors, whose sum is σ = 67489130. Its totient is φ = 67489128.

The previous prime is 67489091. The next prime is 67489181. The reversal of 67489129 is 92198476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63568729 + 3920400 = 7973^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 67489129 - 2¹³ = 67480937 is a prime.

It is not a weakly prime, because it can be changed into another prime (67484129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33744564 + 33744565.

It is an arithmetic number, because the mean of its divisors is an integer number (33744565).

Almost surely, 2^67489129 is an apocalyptic number.

It is an amenable number.

67489129 is a deficient number, since it is larger than the sum of its proper divisors (1).

67489129 is an equidigital number, since it uses as much as digits as its factorization.

67489129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 67489129 is about 8215.1767479464. The cubic root of 67489129 is about 407.1407832165.

The spelling of 67489129 in words is "sixty-seven million, four hundred eighty-nine thousand, one hundred twenty-nine".