3147997448 has 8 divisors (see below), whose sum is σ = 5902495230. Its totient is φ = 1573998720.

The previous prime is 3147997439. The next prime is 3147997453. The reversal of 3147997448 is 8447997413.

It can be written as a sum of positive squares in only one way, i.e., 2802855364 + 345142084 = 52942^2 + 18578^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3147997448² = 19819775865229025408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3147997393 and 3147997402.

It is an unprimeable number.

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, 196749833 + ... + 196749848.

Almost surely, 2^3147997448 is an apocalyptic number.

It is an amenable number.

3147997448 is a deficient number, since it is larger than the sum of its proper divisors (2754497782).

3147997448 is a wasteful number, since it uses less digits than its factorization.

3147997448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393499687 (or 393499683 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 56.

The square root of 3147997448 is about 56107.0178141737. The cubic root of 3147997448 is about 1465.5865043621.

The spelling of 3147997448 in words is "three billion, one hundred forty-seven million, nine hundred ninety-seven thousand, four hundred forty-eight".