1399220216 has 16 divisors (see below), whose sum is σ = 2708168640. Its totient is φ = 677041920.

The previous prime is 1399220201. The next prime is 1399220237. The reversal of 1399220216 is 6120229931.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2820761 + ... + 2821256.

It is an arithmetic number, because the mean of its divisors is an integer number (169260540).

Almost surely, 2^1399220216 is an apocalyptic number.

It is an amenable number.

1399220216 is a deficient number, since it is larger than the sum of its proper divisors (1308948424).

1399220216 is a wasteful number, since it uses less digits than its factorization.

1399220216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5642054 (or 5642050 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1399220216 is about 37406.1521143247. The cubic root of 1399220216 is about 1118.4812045222.

The spelling of 1399220216 in words is "one billion, three hundred ninety-nine million, two hundred twenty thousand, two hundred sixteen".