427186457 has 2 divisors, whose sum is σ = 427186458. Its totient is φ = 427186456.

The previous prime is 427186391. The next prime is 427186493. The reversal of 427186457 is 754681724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410629696 + 16556761 = 20264^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 427186457 - 2¹⁰ = 427185433 is a prime.

It is not a weakly prime, because it can be changed into another prime (427186057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213593228 + 213593229.

It is an arithmetic number, because the mean of its divisors is an integer number (213593229).

Almost surely, 2^427186457 is an apocalyptic number.

It is an amenable number.

427186457 is a deficient number, since it is larger than the sum of its proper divisors (1).

427186457 is an equidigital number, since it uses as much as digits as its factorization.

427186457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The square root of 427186457 is about 20668.4894706894. The cubic root of 427186457 is about 753.1344124372.

The spelling of 427186457 in words is "four hundred twenty-seven million, one hundred eighty-six thousand, four hundred fifty-seven".