126917893 has 4 divisors (see below), whose sum is σ = 127004620. Its totient is φ = 126831168.

The previous prime is 126917851. The next prime is 126917911. The reversal of 126917893 is 398719621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56055169 + 70862724 = 7487^2 + 8418^2 .

It is a cyclic number.

It is not a de Polignac number, because 126917893 - 2²¹ = 124820741 is a prime.

It is a super-2 number, since 2×126917893² = 32216303127118898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126917993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41130 + ... + 44107.

It is an arithmetic number, because the mean of its divisors is an integer number (31751155).

Almost surely, 2^126917893 is an apocalyptic number.

It is an amenable number.

126917893 is a deficient number, since it is larger than the sum of its proper divisors (86727).

126917893 is an equidigital number, since it uses as much as digits as its factorization.

126917893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86726.

The product of its digits is 163296, while the sum is 46.

The square root of 126917893 is about 11265.7841715524. The cubic root of 126917893 is about 502.5442225711.

The spelling of 126917893 in words is "one hundred twenty-six million, nine hundred seventeen thousand, eight hundred ninety-three".