1394442772 has 6 divisors (see below), whose sum is σ = 2440274858. Its totient is φ = 697221384.

The previous prime is 1394442761. The next prime is 1394442779. The reversal of 1394442772 is 2772444931.

It can be written as a sum of positive squares in only one way, i.e., 1165949316 + 228493456 = 34146^2 + 15116^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394442779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174305343 + ... + 174305350.

Almost surely, 2^1394442772 is an apocalyptic number.

It is an amenable number.

1394442772 is a deficient number, since it is larger than the sum of its proper divisors (1045832086).

1394442772 is a wasteful number, since it uses less digits than its factorization.

1394442772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348610697 (or 348610695 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 1394442772 is about 37342.2384438855. The cubic root of 1394442772 is about 1117.2067864936.

The spelling of 1394442772 in words is "one billion, three hundred ninety-four million, four hundred forty-two thousand, seven hundred seventy-two".