1394440228 has 12 divisors (see below), whose sum is σ = 2546369280. Its totient is φ = 666906152.

The previous prime is 1394440199. The next prime is 1394440231. The reversal of 1394440228 is 8220444931.

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, 7578388 + ... + 7578571.

It is an arithmetic number, because the mean of its divisors is an integer number (212197440).

Almost surely, 2^1394440228 is an apocalyptic number.

It is an amenable number.

1394440228 is a deficient number, since it is larger than the sum of its proper divisors (1151929052).

1394440228 is a wasteful number, since it uses less digits than its factorization.

1394440228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15156986 (or 15156984 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 1394440228 is about 37342.2043805665. The cubic root of 1394440228 is about 1117.2061070882.

The spelling of 1394440228 in words is "one billion, three hundred ninety-four million, four hundred forty thousand, two hundred twenty-eight".