1994487 has 16 divisors (see below), whose sum is σ = 3054720. Its totient is φ = 1144800.

The previous prime is 1994483. The next prime is 1994497. The reversal of 1994487 is 7844991.

It is not a de Polignac number, because 1994487 - 2² = 1994483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994483) 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, 964 + ... + 2217.

It is an arithmetic number, because the mean of its divisors is an integer number (190920).

2^1994487 is an apocalyptic number.

1994487 is a deficient number, since it is larger than the sum of its proper divisors (1060233).

1994487 is a wasteful number, since it uses less digits than its factorization.

1994487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214.

The product of its digits is 72576, while the sum is 42.

The square root of 1994487 is about 1412.2630774753. The cubic root of 1994487 is about 125.8762327111.

The spelling of 1994487 in words is "one million, nine hundred ninety-four thousand, four hundred eighty-seven".