1409669 has 4 divisors (see below), whose sum is σ = 1442496. Its totient is φ = 1376844.

The previous prime is 1409659. The next prime is 1409677. The reversal of 1409669 is 9669041.

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 1409669 - 2²⁰ = 361093 is a prime.

It is a super-2 number, since 2×1409669² = 3974333379122, 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 (1409659) 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, 16349 + ... + 16434.

It is an arithmetic number, because the mean of its divisors is an integer number (360624).

2^1409669 is an apocalyptic number.

It is an amenable number.

1409669 is a deficient number, since it is larger than the sum of its proper divisors (32827).

1409669 is an equidigital number, since it uses as much as digits as its factorization.

1409669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32826.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1409669 is about 1187.2948243802. The cubic root of 1409669 is about 112.1258417586.

The spelling of 1409669 in words is "one million, four hundred nine thousand, six hundred sixty-nine".