1478669 has 4 divisors (see below), whose sum is σ = 1526400. Its totient is φ = 1430940.

The previous prime is 1478663. The next prime is 1478683. The reversal of 1478669 is 9668741.

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 1478669 - 2⁸ = 1478413 is a prime.

It is a super-2 number, since 2×1478669² = 4372924023122, 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 (1478663) 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, 23819 + ... + 23880.

It is an arithmetic number, because the mean of its divisors is an integer number (381600).

2^1478669 is an apocalyptic number.

It is an amenable number.

1478669 is a deficient number, since it is larger than the sum of its proper divisors (47731).

1478669 is an equidigital number, since it uses as much as digits as its factorization.

1478669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47730.

The product of its digits is 72576, while the sum is 41.

The square root of 1478669 is about 1216.0053453830. The cubic root of 1478669 is about 113.9262116114.

The spelling of 1478669 in words is "one million, four hundred seventy-eight thousand, six hundred sixty-nine".