3487989 has 4 divisors (see below), whose sum is σ = 4650656. Its totient is φ = 2325324.

The previous prime is 3487987. The next prime is 3487997. The reversal of 3487989 is 9897843.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3487989 - 2¹ = 3487987 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3487987) 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 in 3 ways as a sum of consecutive naturals, for example, 581329 + ... + 581334.

It is an arithmetic number, because the mean of its divisors is an integer number (1162664).

Almost surely, 2^3487989 is an apocalyptic number.

It is an amenable number.

3487989 is a deficient number, since it is larger than the sum of its proper divisors (1162667).

3487989 is a wasteful number, since it uses less digits than its factorization.

3487989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162666.

The product of its digits is 435456, while the sum is 48.

The square root of 3487989 is about 1867.6158598598. The cubic root of 3487989 is about 151.6555711133.

The spelling of 3487989 in words is "three million, four hundred eighty-seven thousand, nine hundred eighty-nine".