1423409 has 8 divisors (see below), whose sum is σ = 1542912. Its totient is φ = 1305360.

The previous prime is 1423403. The next prime is 1423417. The reversal of 1423409 is 9043241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2654 + ... + 3144.

It is an arithmetic number, because the mean of its divisors is an integer number (192864).

2^1423409 is an apocalyptic number.

It is an amenable number.

1423409 is a deficient number, since it is larger than the sum of its proper divisors (119503).

1423409 is a wasteful number, since it uses less digits than its factorization.

1423409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1423409 is about 1193.0670559528. The cubic root of 1423409 is about 112.4889602336.

The spelling of 1423409 in words is "one million, four hundred twenty-three thousand, four hundred nine".