1399923 has 24 divisors (see below), whose sum is σ = 2399488. Its totient is φ = 798984.

The previous prime is 1399919. The next prime is 1399943. The reversal of 1399923 is 3299931.

It is not a de Polignac number, because 1399923 - 2² = 1399919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1290 + ... + 2112.

2^1399923 is an apocalyptic number.

1399923 is a deficient number, since it is larger than the sum of its proper divisors (999565).

1399923 is an frugal number, since it uses more digits than its factorization.

1399923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 833 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 1399923 is about 1183.1834177337. The cubic root of 1399923 is about 111.8668432408.

The spelling of 1399923 in words is "one million, three hundred ninety-nine thousand, nine hundred twenty-three".