1230399 has 6 divisors (see below), whose sum is σ = 1777256. Its totient is φ = 820260.

The previous prime is 1230391. The next prime is 1230401. The reversal of 1230399 is 9930321.

It is not a de Polignac number, because 1230399 - 2³ = 1230391 is a prime.

It is a Duffinian number.

1230399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68347 + ... + 68364.

2^1230399 is an apocalyptic number.

1230399 is a deficient number, since it is larger than the sum of its proper divisors (546857).

1230399 is a wasteful number, since it uses less digits than its factorization.

1230399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136717 (or 136714 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 1230399 is about 1109.2335191473. The cubic root of 1230399 is about 107.1557112197.

It can be divided in two parts, 1 and 230399, that added together give a square (230400 = 480²).

The spelling of 1230399 in words is "one million, two hundred thirty thousand, three hundred ninety-nine".