1157839 has 2 divisors, whose sum is σ = 1157840. Its totient is φ = 1157838.

The previous prime is 1157837. The next prime is 1157851. The reversal of 1157839 is 9387511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1157839 - 2¹ = 1157837 is a prime.

It is a super-2 number, since 2×1157839² = 2681182299842, which contains 22 as substring.

Together with 1157837, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578919 + 578920.

It is an arithmetic number, because the mean of its divisors is an integer number (578920).

2^1157839 is an apocalyptic number.

1157839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157839 is an equidigital number, since it uses as much as digits as its factorization.

1157839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 1157839 is about 1076.0292746947. The cubic root of 1157839 is about 105.0064697450.

The spelling of 1157839 in words is "one million, one hundred fifty-seven thousand, eight hundred thirty-nine".