1427907973 has 2 divisors, whose sum is σ = 1427907974. Its totient is φ = 1427907972.

The previous prime is 1427907937. The next prime is 1427907977. The reversal of 1427907973 is 3797097241.

Together with previous prime (1427907937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1279993729 + 147914244 = 35777^2 + 12162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1427907973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427907977) 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, 713953986 + 713953987.

It is an arithmetic number, because the mean of its divisors is an integer number (713953987).

Almost surely, 2^1427907973 is an apocalyptic number.

It is an amenable number.

1427907973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427907973 is an equidigital number, since it uses as much as digits as its factorization.

1427907973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 1427907973 is about 37787.6695894309. The cubic root of 1427907973 is about 1126.0735031789.

The spelling of 1427907973 in words is "one billion, four hundred twenty-seven million, nine hundred seven thousand, nine hundred seventy-three".