1994859 has 18 divisors (see below), whose sum is σ = 3019380. Its totient is φ = 1269048.

The previous prime is 1994843. The next prime is 1994869. The reversal of 1994859 is 9584991.

It is not a de Polignac number, because 1994859 - 2⁴ = 1994843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1994869) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4552 + ... + 4970.

2^1994859 is an apocalyptic number.

1994859 is a deficient number, since it is larger than the sum of its proper divisors (1024521).

1994859 is a wasteful number, since it uses less digits than its factorization.

1994859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 445 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 1994859 is about 1412.3947748417. The cubic root of 1994859 is about 125.8840581231.

The spelling of 1994859 in words is "one million, nine hundred ninety-four thousand, eight hundred fifty-nine".