1427907977 has 2 divisors, whose sum is σ = 1427907978. Its totient is φ = 1427907976.

The previous prime is 1427907973. The next prime is 1427908021. The reversal of 1427907977 is 7797097241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1378191376 + 49716601 = 37124^2 + 7051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427907977 - 2² = 1427907973 is a prime.

It is not a weakly prime, because it can be changed into another prime (1427907973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713953988 + 713953989.

It is an arithmetic number, because the mean of its divisors is an integer number (713953989).

Almost surely, 2^1427907977 is an apocalyptic number.

It is an amenable number.

1427907977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427907977 is an equidigital number, since it uses as much as digits as its factorization.

1427907977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555848, while the sum is 53.

The square root of 1427907977 is about 37787.6696423582. The cubic root of 1427907977 is about 1126.0735042304.

The spelling of 1427907977 in words is "one billion, four hundred twenty-seven million, nine hundred seven thousand, nine hundred seventy-seven".