1330399 has 12 divisors (see below), whose sum is σ = 1630200. Its totient is φ = 1079568.

The previous prime is 1330397. The next prime is 1330411. The reversal of 1330399 is 9930331.

It is a happy number.

It is not a de Polignac number, because 1330399 - 2¹ = 1330397 is a prime.

It is a super-2 number, since 2×1330399² = 3539922998402, which contains 22 as substring.

1330399 is a modest number, since divided by 399 gives 133 as remainder.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 217 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (135850).

2^1330399 is an apocalyptic number.

1330399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1330399 is a deficient number, since it is larger than the sum of its proper divisors (299801).

1330399 is a wasteful number, since it uses less digits than its factorization.

1330399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1455 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 28.

The square root of 1330399 is about 1153.4292349338. The cubic root of 1330399 is about 109.9834410336.

The spelling of 1330399 in words is "one million, three hundred thirty thousand, three hundred ninety-nine".