3969487 has 2 divisors, whose sum is σ = 3969488. Its totient is φ = 3969486.

The previous prime is 3969481. The next prime is 3969503. The reversal of 3969487 is 7849693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3969487 - 2¹⁹ = 3445199 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3969481) by changing a digit.

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, 1984743 + 1984744.

It is an arithmetic number, because the mean of its divisors is an integer number (1984744).

Almost surely, 2^3969487 is an apocalyptic number.

3969487 is a deficient number, since it is larger than the sum of its proper divisors (1).

3969487 is an equidigital number, since it uses as much as digits as its factorization.

3969487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 3969487 is about 1992.3571466984. The cubic root of 3969487 is about 158.3354380761.

The spelling of 3969487 in words is "three million, nine hundred sixty-nine thousand, four hundred eighty-seven".