1227998854 has 8 divisors (see below), whose sum is σ = 1860988248. Its totient is φ = 607669440.

The previous prime is 1227998839. The next prime is 1227998873. The reversal of 1227998854 is 4588997221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1227998795 and 1227998804.

It is a congruent number.

It is an unprimeable number.

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, 3164752 + ... + 3165139.

It is an arithmetic number, because the mean of its divisors is an integer number (232623531).

Almost surely, 2^1227998854 is an apocalyptic number.

1227998854 is a deficient number, since it is larger than the sum of its proper divisors (632989394).

1227998854 is an equidigital number, since it uses as much as digits as its factorization.

1227998854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329990.

The product of its digits is 2903040, while the sum is 55.

The square root of 1227998854 is about 35042.8145844480. The cubic root of 1227998854 is about 1070.8598945557.

The spelling of 1227998854 in words is "one billion, two hundred twenty-seven million, nine hundred ninety-eight thousand, eight hundred fifty-four".