427738427 has 2 divisors, whose sum is σ = 427738428. Its totient is φ = 427738426.

The previous prime is 427738397. The next prime is 427738439. The reversal of 427738427 is 724837724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427738427 - 2²⁴ = 410961211 is a prime.

It is not a weakly prime, because it can be changed into another prime (427738477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213869213 + 213869214.

It is an arithmetic number, because the mean of its divisors is an integer number (213869214).

Almost surely, 2^427738427 is an apocalyptic number.

427738427 is a deficient number, since it is larger than the sum of its proper divisors (1).

427738427 is an equidigital number, since it uses as much as digits as its factorization.

427738427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 526848, while the sum is 44.

The square root of 427738427 is about 20681.8380952951. The cubic root of 427738427 is about 753.4586492174.

The spelling of 427738427 in words is "four hundred twenty-seven million, seven hundred thirty-eight thousand, four hundred twenty-seven".