126899629 has 2 divisors, whose sum is σ = 126899630. Its totient is φ = 126899628.

The previous prime is 126899627. The next prime is 126899659. The reversal of 126899629 is 926998621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88397604 + 38502025 = 9402^2 + 6205^2 .

It is an emirp because it is prime and its reverse (926998621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126899629 - 2¹ = 126899627 is a prime.

It is a super-2 number, since 2×126899629² = 32207031680675282, which contains 22 as substring.

Together with 126899627, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126899627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63449814 + 63449815.

It is an arithmetic number, because the mean of its divisors is an integer number (63449815).

Almost surely, 2^126899629 is an apocalyptic number.

It is an amenable number.

126899629 is a deficient number, since it is larger than the sum of its proper divisors (1).

126899629 is an equidigital number, since it uses as much as digits as its factorization.

126899629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 52.

The square root of 126899629 is about 11264.9735463515. The cubic root of 126899629 is about 502.5201153635.

The spelling of 126899629 in words is "one hundred twenty-six million, eight hundred ninety-nine thousand, six hundred twenty-nine".