427907173 has 2 divisors, whose sum is σ = 427907174. Its totient is φ = 427907172.

The previous prime is 427907171. The next prime is 427907243. The reversal of 427907173 is 371709724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381694369 + 46212804 = 19537^2 + 6798^2 .

It is a cyclic number.

It is not a de Polignac number, because 427907173 - 2¹ = 427907171 is a prime.

Together with 427907171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427907171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213953586 + 213953587.

It is an arithmetic number, because the mean of its divisors is an integer number (213953587).

Almost surely, 2^427907173 is an apocalyptic number.

It is an amenable number.

427907173 is a deficient number, since it is larger than the sum of its proper divisors (1).

427907173 is an equidigital number, since it uses as much as digits as its factorization.

427907173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 427907173 is about 20685.9172627176. The cubic root of 427907173 is about 753.5577178765.

The spelling of 427907173 in words is "four hundred twenty-seven million, nine hundred seven thousand, one hundred seventy-three".