3216997444 has 6 divisors (see below), whose sum is σ = 5629745534. Its totient is φ = 1608498720.

The previous prime is 3216997409. The next prime is 3216997451. The reversal of 3216997444 is 4447996123.

It can be written as a sum of positive squares in only one way, i.e., 2904132100 + 312865344 = 53890^2 + 17688^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402124677 + ... + 402124684.

Almost surely, 2^3216997444 is an apocalyptic number.

It is an amenable number.

3216997444 is a deficient number, since it is larger than the sum of its proper divisors (2412748090).

3216997444 is a wasteful number, since it uses less digits than its factorization.

3216997444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804249365 (or 804249363 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 3216997444 is about 56718.5811176549. The cubic root of 3216997444 is about 1476.2171233629.

The spelling of 3216997444 in words is "three billion, two hundred sixteen million, nine hundred ninety-seven thousand, four hundred forty-four".