427427427 has 16 divisors (see below), whose sum is σ = 661997312. Its totient is φ = 240239520.

The previous prime is 427427393. The next prime is 427427437. The reversal of 427427427 is 724724724.

It is not a de Polignac number, because 427427427 - 2¹² = 427423331 is a prime.

It is a Duffinian number.

427427427 is a modest number, since divided by 427427 gives 427 as remainder.

It is not an unprimeable number, because it can be changed into a prime (427427437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165553 + ... + 168114.

It is an arithmetic number, because the mean of its divisors is an integer number (41374832).

Almost surely, 2^427427427 is an apocalyptic number.

427427427 is a deficient number, since it is larger than the sum of its proper divisors (234569885).

427427427 is a wasteful number, since it uses less digits than its factorization.

427427427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333738.

The product of its digits is 175616, while the sum is 39.

The square root of 427427427 is about 20674.3180540496. The cubic root of 427427427 is about 753.2759967369.

The spelling of 427427427 in words is "four hundred twenty-seven million, four hundred twenty-seven thousand, four hundred twenty-seven".