1157399 has 4 divisors (see below), whose sum is σ = 1160136. Its totient is φ = 1154664.

The previous prime is 1157393. The next prime is 1157413. The reversal of 1157399 is 9937511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1157399 - 2¹⁶ = 1091863 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (290034).

2^1157399 is an apocalyptic number.

1157399 is a deficient number, since it is larger than the sum of its proper divisors (2737).

1157399 is an equidigital number, since it uses as much as digits as its factorization.

1157399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736.

The product of its digits is 8505, while the sum is 35.

The square root of 1157399 is about 1075.8247998629. The cubic root of 1157399 is about 104.9931665999.

The spelling of 1157399 in words is "one million, one hundred fifty-seven thousand, three hundred ninety-nine".