1214229277 has 4 divisors (see below), whose sum is σ = 1214622940. Its totient is φ = 1213835616.

The previous prime is 1214229241. The next prime is 1214229281. The reversal of 1214229277 is 7729224121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 294259716 + 919969561 = 17154^2 + 30331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214229277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214229287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192168 + ... + 198385.

It is an arithmetic number, because the mean of its divisors is an integer number (303655735).

Almost surely, 2^1214229277 is an apocalyptic number.

It is an amenable number.

1214229277 is a deficient number, since it is larger than the sum of its proper divisors (393663).

1214229277 is an equidigital number, since it uses as much as digits as its factorization.

1214229277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393662.

The product of its digits is 28224, while the sum is 37.

The square root of 1214229277 is about 34845.7928163502. The cubic root of 1214229277 is about 1066.8423156813.

The spelling of 1214229277 in words is "one billion, two hundred fourteen million, two hundred twenty-nine thousand, two hundred seventy-seven".