3997274461 has 2 divisors, whose sum is σ = 3997274462. Its totient is φ = 3997274460.

The previous prime is 3997274431. The next prime is 3997274483. The reversal of 3997274461 is 1644727993.

3997274461 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2947838436 + 1049436025 = 54294^2 + 32395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3997274461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3997274399 and 3997274408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3997274431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998637230 + 1998637231.

It is an arithmetic number, because the mean of its divisors is an integer number (1998637231).

Almost surely, 2^3997274461 is an apocalyptic number.

It is an amenable number.

3997274461 is a deficient number, since it is larger than the sum of its proper divisors (1).

3997274461 is an equidigital number, since it uses as much as digits as its factorization.

3997274461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 52.

The square root of 3997274461 is about 63224.0022538909. The cubic root of 3997274461 is about 1587.0404264246.

The spelling of 3997274461 in words is "three billion, nine hundred ninety-seven million, two hundred seventy-four thousand, four hundred sixty-one".