126697489 has 2 divisors, whose sum is σ = 126697490. Its totient is φ = 126697488.

The previous prime is 126697471. The next prime is 126697499. The reversal of 126697489 is 984796621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103734225 + 22963264 = 10185^2 + 4792^2 .

It is a cyclic number.

It is not a de Polignac number, because 126697489 - 2⁵ = 126697457 is a prime.

It is not a weakly prime, because it can be changed into another prime (126697499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63348744 + 63348745.

It is an arithmetic number, because the mean of its divisors is an integer number (63348745).

Almost surely, 2^126697489 is an apocalyptic number.

It is an amenable number.

126697489 is a deficient number, since it is larger than the sum of its proper divisors (1).

126697489 is an equidigital number, since it uses as much as digits as its factorization.

126697489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 126697489 is about 11255.9979122244. The cubic root of 126697489 is about 502.2531500450.

The spelling of 126697489 in words is "one hundred twenty-six million, six hundred ninety-seven thousand, four hundred eighty-nine".