1874989 has 4 divisors (see below), whose sum is σ = 1886656. Its totient is φ = 1863324.

The previous prime is 1874987. The next prime is 1874993. The reversal of 1874989 is 9894781.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1874989 - 2¹ = 1874987 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1874987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5589 + ... + 5914.

It is an arithmetic number, because the mean of its divisors is an integer number (471664).

2^1874989 is an apocalyptic number.

It is an amenable number.

1874989 is a deficient number, since it is larger than the sum of its proper divisors (11667).

1874989 is a wasteful number, since it uses less digits than its factorization.

1874989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11666.

The product of its digits is 145152, while the sum is 46.

The square root of 1874989 is about 1369.3023771249. The cubic root of 1874989 is about 123.3103625753.

It can be divided in two parts, 18749 and 89, that multiplied together give a palindrome (1668661).

The spelling of 1874989 in words is "one million, eight hundred seventy-four thousand, nine hundred eighty-nine".