3219987 has 16 divisors (see below), whose sum is σ = 4786560. Its totient is φ = 1913472.

The previous prime is 3219973. The next prime is 3219989. The reversal of 3219987 is 7899123.

3219987 is nontrivially palindromic in base 4 and base 16.

It is not a de Polignac number, because 3219987 - 2⁷ = 3219859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3219989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693 + ... + 2630.

It is an arithmetic number, because the mean of its divisors is an integer number (299160).

Almost surely, 2^3219987 is an apocalyptic number.

3219987 is a deficient number, since it is larger than the sum of its proper divisors (1566573).

3219987 is a wasteful number, since it uses less digits than its factorization.

3219987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362.

The product of its digits is 27216, while the sum is 39.

The square root of 3219987 is about 1794.4322221806. The cubic root of 3219987 is about 147.6674264685.

The spelling of 3219987 in words is "three million, two hundred nineteen thousand, nine hundred eighty-seven".