3948558461 has 2 divisors, whose sum is σ = 3948558462. Its totient is φ = 3948558460.

The previous prime is 3948558437. The next prime is 3948558479. The reversal of 3948558461 is 1648558493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3391315225 + 557243236 = 58235^2 + 23606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3948558461 is a prime.

It is a super-2 number, since 2×3948558461² = 31182227839869377042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3948558161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974279230 + 1974279231.

It is an arithmetic number, because the mean of its divisors is an integer number (1974279231).

Almost surely, 2^3948558461 is an apocalyptic number.

It is an amenable number.

3948558461 is a deficient number, since it is larger than the sum of its proper divisors (1).

3948558461 is an equidigital number, since it uses as much as digits as its factorization.

3948558461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 53.

The square root of 3948558461 is about 62837.5561348466. The cubic root of 3948558461 is about 1580.5668079357.

The spelling of 3948558461 in words is "three billion, nine hundred forty-eight million, five hundred fifty-eight thousand, four hundred sixty-one".