1427669 has 4 divisors (see below), whose sum is σ = 1438080. Its totient is φ = 1417260.

The previous prime is 1427663. The next prime is 1427681. The reversal of 1427669 is 9667241.

1427669 is nontrivially palindromic in base 4.

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 a cyclic number.

It is not a de Polignac number, because 1427669 - 2⁴ = 1427653 is a prime.

It is a super-2 number, since 2×1427669² = 4076477547122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4997 + ... + 5274.

It is an arithmetic number, because the mean of its divisors is an integer number (359520).

2^1427669 is an apocalyptic number.

It is an amenable number.

1427669 is a deficient number, since it is larger than the sum of its proper divisors (10411).

1427669 is a wasteful number, since it uses less digits than its factorization.

1427669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410.

The product of its digits is 18144, while the sum is 35.

The square root of 1427669 is about 1194.8510367406. The cubic root of 1427669 is about 112.6010680228.

The spelling of 1427669 in words is "one million, four hundred twenty-seven thousand, six hundred sixty-nine".