1964487 has 16 divisors (see below), whose sum is σ = 3019520. Its totient is φ = 1112832.

The previous prime is 1964483. The next prime is 1964531. The reversal of 1964487 is 7844691.

It is a happy number.

It is not a de Polignac number, because 1964487 - 2² = 1964483 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

1964487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964483) 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, 2583 + ... + 3255.

It is an arithmetic number, because the mean of its divisors is an integer number (188720).

2^1964487 is an apocalyptic number.

1964487 is a deficient number, since it is larger than the sum of its proper divisors (1055033).

1964487 is a wasteful number, since it uses less digits than its factorization.

1964487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822.

The product of its digits is 48384, while the sum is 39.

The square root of 1964487 is about 1401.6015839032. The cubic root of 1964487 is about 125.2419208258.

The spelling of 1964487 in words is "one million, nine hundred sixty-four thousand, four hundred eighty-seven".