427321277 has 2 divisors, whose sum is σ = 427321278. Its totient is φ = 427321276.

The previous prime is 427321249. The next prime is 427321303. The reversal of 427321277 is 772123724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426463801 + 857476 = 20651^2 + 926^2 .

It is a cyclic number.

It is not a de Polignac number, because 427321277 - 2⁸ = 427321021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427321777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213660638 + 213660639.

It is an arithmetic number, because the mean of its divisors is an integer number (213660639).

Almost surely, 2^427321277 is an apocalyptic number.

It is an amenable number.

427321277 is a deficient number, since it is larger than the sum of its proper divisors (1).

427321277 is an equidigital number, since it uses as much as digits as its factorization.

427321277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928, while the sum is 35.

The square root of 427321277 is about 20671.7506999286. The cubic root of 427321277 is about 753.2136338170.

The spelling of 427321277 in words is "four hundred twenty-seven million, three hundred twenty-one thousand, two hundred seventy-seven".