1423309 has 8 divisors (see below), whose sum is σ = 1563840. Its totient is φ = 1289376.

The previous prime is 1423307. The next prime is 1423319. The reversal of 1423309 is 9033241.

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

It is a cyclic number.

It is not a de Polignac number, because 1423309 - 2¹ = 1423307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1423309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423307) 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, 1192 + ... + 2065.

It is an arithmetic number, because the mean of its divisors is an integer number (195480).

2^1423309 is an apocalyptic number.

1423309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1423309 is a deficient number, since it is larger than the sum of its proper divisors (140531).

1423309 is a wasteful number, since it uses less digits than its factorization.

1423309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3299.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1423309 is about 1193.0251464240. The cubic root of 1423309 is about 112.4863259100.

The spelling of 1423309 in words is "one million, four hundred twenty-three thousand, three hundred nine".