1396865972 has 6 divisors (see below), whose sum is σ = 2444515458. Its totient is φ = 698432984.

The previous prime is 1396865917. The next prime is 1396866001. The reversal of 1396865972 is 2795686931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1389500176 + 7365796 = 37276^2 + 2714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174608243 + ... + 174608250.

It is an arithmetic number, because the mean of its divisors is an integer number (407419243).

Almost surely, 2^1396865972 is an apocalyptic number.

It is an amenable number.

1396865972 is a deficient number, since it is larger than the sum of its proper divisors (1047649486).

1396865972 is a wasteful number, since it uses less digits than its factorization.

1396865972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349216497 (or 349216495 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The square root of 1396865972 is about 37374.6701925248. The cubic root of 1396865972 is about 1117.8535559159.

The spelling of 1396865972 in words is "one billion, three hundred ninety-six million, eight hundred sixty-five thousand, nine hundred seventy-two".