126886779 has 6 divisors (see below), whose sum is σ = 183280916. Its totient is φ = 84591180.

The previous prime is 126886763. The next prime is 126886783. The reversal of 126886779 is 977688621.

It is not a de Polignac number, because 126886779 - 2⁴ = 126886763 is a prime.

It is a super-2 number, since 2×126886779² = 32200509369989682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126886979) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7049257 + ... + 7049274.

Almost surely, 2^126886779 is an apocalyptic number.

126886779 is a deficient number, since it is larger than the sum of its proper divisors (56394137).

126886779 is a wasteful number, since it uses less digits than its factorization.

126886779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14098537 (or 14098534 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 126886779 is about 11264.4031799292. The cubic root of 126886779 is about 502.5031528725.

The spelling of 126886779 in words is "one hundred twenty-six million, eight hundred eighty-six thousand, seven hundred seventy-nine".