1128977 has 2 divisors, whose sum is σ = 1128978. Its totient is φ = 1128976.

The previous prime is 1128949. The next prime is 1128979. The reversal of 1128977 is 7798211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1032256 + 96721 = 1016^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128977 - 2¹⁶ = 1063441 is a prime.

Together with 1128979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1128979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564488 + 564489.

It is an arithmetic number, because the mean of its divisors is an integer number (564489).

2^1128977 is an apocalyptic number.

It is an amenable number.

1128977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128977 is an equidigital number, since it uses as much as digits as its factorization.

1128977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 35.

The square root of 1128977 is about 1062.5332935960. The cubic root of 1128977 is about 104.1266024771.

The spelling of 1128977 in words is "one million, one hundred twenty-eight thousand, nine hundred seventy-seven".