1289938 has 8 divisors (see below), whose sum is σ = 2083788. Its totient is φ = 595344.

The previous prime is 1289933. The next prime is 1289963. The reversal of 1289938 is 8399821.

It can be written as a sum of positive squares in 2 ways, for example, as 896809 + 393129 = 947^2 + 627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1289938.

It is not an unprimeable number, because it can be changed into a prime (1289933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24781 + ... + 24832.

2^1289938 is an apocalyptic number.

1289938 is a deficient number, since it is larger than the sum of its proper divisors (793850).

1289938 is a wasteful number, since it uses less digits than its factorization.

1289938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49628.

The product of its digits is 31104, while the sum is 40.

The square root of 1289938 is about 1135.7543748540. The cubic root of 1289938 is about 108.8569793275.

The spelling of 1289938 in words is "one million, two hundred eighty-nine thousand, nine hundred thirty-eight".