1399276218 has 16 divisors (see below), whose sum is σ = 2825724096. Its totient is φ = 461896800.

The previous prime is 1399276217. The next prime is 1399276247. The reversal of 1399276218 is 8126729931.

It is not an unprimeable number, because it can be changed into a prime (1399276211) 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, 1131483 + ... + 1132718.

It is an arithmetic number, because the mean of its divisors is an integer number (176607756).

Almost surely, 2^1399276218 is an apocalyptic number.

1399276218 is an abundant number, since it is smaller than the sum of its proper divisors (1426447878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1399276218 is a wasteful number, since it uses less digits than its factorization.

1399276218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264309.

The product of its digits is 326592, while the sum is 48.

The square root of 1399276218 is about 37406.9006735388. The cubic root of 1399276218 is about 1118.4961262498.

The spelling of 1399276218 in words is "one billion, three hundred ninety-nine million, two hundred seventy-six thousand, two hundred eighteen".