1140429977 has 2 divisors, whose sum is σ = 1140429978. Its totient is φ = 1140429976.

The previous prime is 1140429911. The next prime is 1140430009. The reversal of 1140429977 is 7799240411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969761881 + 170668096 = 31141^2 + 13064^2 .

It is an emirp because it is prime and its reverse (7799240411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140429977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1140419977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570214988 + 570214989.

It is an arithmetic number, because the mean of its divisors is an integer number (570214989).

Almost surely, 2^1140429977 is an apocalyptic number.

It is an amenable number.

1140429977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140429977 is an equidigital number, since it uses as much as digits as its factorization.

1140429977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 1140429977 is about 33770.2528418133. The cubic root of 1140429977 is about 1044.7752474076.

The spelling of 1140429977 in words is "one billion, one hundred forty million, four hundred twenty-nine thousand, nine hundred seventy-seven".