1150399 has 4 divisors (see below), whose sum is σ = 1169320. Its totient is φ = 1131480.

The previous prime is 1150397. The next prime is 1150403. The reversal of 1150399 is 9930511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9930511 = 127 ⋅78193.

It is a cyclic number.

It is not a de Polignac number, because 1150399 - 2¹ = 1150397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9369 + ... + 9490.

It is an arithmetic number, because the mean of its divisors is an integer number (292330).

2^1150399 is an apocalyptic number.

1150399 is a deficient number, since it is larger than the sum of its proper divisors (18921).

1150399 is an equidigital number, since it uses as much as digits as its factorization.

1150399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18920.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1150399 is about 1072.5665480519. The cubic root of 1150399 is about 104.7810706735.

Subtracting from 1150399 its product of nonzero digits (1215), we obtain a square (1149184 = 1072²).

The spelling of 1150399 in words is "one million, one hundred fifty thousand, three hundred ninety-nine".