3987459397 has 2 divisors, whose sum is σ = 3987459398. Its totient is φ = 3987459396.

The previous prime is 3987459353. The next prime is 3987459403. The reversal of 3987459397 is 7939547893.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3943714401 + 43744996 = 62799^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3987459397 - 2¹⁵ = 3987426629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3987459097) 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, 1993729698 + 1993729699.

It is an arithmetic number, because the mean of its divisors is an integer number (1993729699).

Almost surely, 2^3987459397 is an apocalyptic number.

It is an amenable number.

3987459397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3987459397 is an equidigital number, since it uses as much as digits as its factorization.

3987459397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51438240, while the sum is 64.

The square root of 3987459397 is about 63146.3332031243. Note that the first 3 decimals coincide. The cubic root of 3987459397 is about 1585.7404014277.

The spelling of 3987459397 in words is "three billion, nine hundred eighty-seven million, four hundred fifty-nine thousand, three hundred ninety-seven".