126977769 has 12 divisors (see below), whose sum is σ = 183888900. Its totient is φ = 84431904.

The previous prime is 126977713. The next prime is 126977801. The reversal of 126977769 is 967779621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 86490000 + 40487769 = 9300^2 + 6363^2 .

It is not a de Polignac number, because 126977769 - 2¹² = 126973673 is a prime.

It is a super-2 number, since 2×126977769² = 32246707640434722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126977069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14634 + ... + 21635.

It is an arithmetic number, because the mean of its divisors is an integer number (15324075).

Almost surely, 2^126977769 is an apocalyptic number.

It is an amenable number.

126977769 is a deficient number, since it is larger than the sum of its proper divisors (56911131).

126977769 is a wasteful number, since it uses less digits than its factorization.

126977769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36664 (or 36661 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 54.

The square root of 126977769 is about 11268.4412852888. The cubic root of 126977769 is about 502.6232385042.

The spelling of 126977769 in words is "one hundred twenty-six million, nine hundred seventy-seven thousand, seven hundred sixty-nine".