1399423 has 8 divisors (see below), whose sum is σ = 1492128. Its totient is φ = 1307904.

The previous prime is 1399417. The next prime is 1399427. The reversal of 1399423 is 3249931.

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 1399423 - 2⁹ = 1398911 is a prime.

It is a Duffinian number.

1399423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399427) 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, 4315 + ... + 4627.

It is an arithmetic number, because the mean of its divisors is an integer number (186516).

2^1399423 is an apocalyptic number.

1399423 is a deficient number, since it is larger than the sum of its proper divisors (92705).

1399423 is a wasteful number, since it uses less digits than its factorization.

1399423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593.

The product of its digits is 5832, while the sum is 31.

The square root of 1399423 is about 1182.9721044894. The cubic root of 1399423 is about 111.8535234411.

It can be divided in two parts, 1 and 399423, that added together give a square (399424 = 632²).

The spelling of 1399423 in words is "one million, three hundred ninety-nine thousand, four hundred twenty-three".