427629 has 4 divisors (see below), whose sum is σ = 570176. Its totient is φ = 285084.

The previous prime is 427621. The next prime is 427681. The reversal of 427629 is 926724.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 427629 - 2³ = 427621 is a prime.

It is a D-number.

It is a Duffinian number.

427629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 427596 and 427605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71269 + ... + 71274.

It is an arithmetic number, because the mean of its divisors is an integer number (142544).

2⁴²⁷⁶²⁹ is an apocalyptic number.

It is an amenable number.

427629 is a deficient number, since it is larger than the sum of its proper divisors (142547).

427629 is a wasteful number, since it uses less digits than its factorization.

427629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142546.

The product of its digits is 6048, while the sum is 30.

The square root of 427629 is about 653.9334828559. The cubic root of 427629 is about 75.3394392072.

The spelling of 427629 in words is "four hundred twenty-seven thousand, six hundred twenty-nine".