1198957 has 4 divisors (see below), whose sum is σ = 1262080. Its totient is φ = 1135836.

The previous prime is 1198949. The next prime is 1198973. The reversal of 1198957 is 7598911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7598911 = 113 ⋅67247.

It is a cyclic number.

It is not a de Polignac number, because 1198957 - 2³ = 1198949 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31533 + ... + 31570.

It is an arithmetic number, because the mean of its divisors is an integer number (315520).

2^1198957 is an apocalyptic number.

It is an amenable number.

1198957 is a deficient number, since it is larger than the sum of its proper divisors (63123).

1198957 is an equidigital number, since it uses as much as digits as its factorization.

1198957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63122.

The product of its digits is 22680, while the sum is 40.

The square root of 1198957 is about 1094.9689493314. The cubic root of 1198957 is about 106.2350604139.

The spelling of 1198957 in words is "one million, one hundred ninety-eight thousand, nine hundred fifty-seven".