1396888228 has 6 divisors (see below), whose sum is σ = 2444554406. Its totient is φ = 698444112.

The previous prime is 1396888223. The next prime is 1396888243. The reversal of 1396888228 is 8228886931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1268926884 + 127961344 = 35622^2 + 11312^2 .

It is not an unprimeable number, because it can be changed into a prime (1396888223) by changing a digit.

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 as a sum of consecutive naturals, namely, 174611025 + ... + 174611032.

Almost surely, 2^1396888228 is an apocalyptic number.

It is an amenable number.

1396888228 is a deficient number, since it is larger than the sum of its proper divisors (1047666178).

1396888228 is a wasteful number, since it uses less digits than its factorization.

1396888228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349222061 (or 349222059 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 55.

The square root of 1396888228 is about 37374.9679330966. The cubic root of 1396888228 is about 1117.8594927337.

The spelling of 1396888228 in words is "one billion, three hundred ninety-six million, eight hundred eighty-eight thousand, two hundred twenty-eight".