1198947 has 8 divisors (see below), whose sum is σ = 1653840. Its totient is φ = 771680.

The previous prime is 1198927. The next prime is 1198949. The reversal of 1198947 is 7498911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1198947 - 2⁷ = 1198819 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1198949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6804 + ... + 6977.

It is an arithmetic number, because the mean of its divisors is an integer number (206730).

2^1198947 is an apocalyptic number.

1198947 is a deficient number, since it is larger than the sum of its proper divisors (454893).

1198947 is a wasteful number, since it uses less digits than its factorization.

1198947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13813.

The product of its digits is 18144, while the sum is 39.

The square root of 1198947 is about 1094.9643829824. The cubic root of 1198947 is about 106.2347650590.

It can be divided in two parts, 1198 and 947, that added together give a triangular number (2145 = T₆₅).

The spelling of 1198947 in words is "one million, one hundred ninety-eight thousand, nine hundred forty-seven".