1001394 has 12 divisors (see below), whose sum is σ = 2169726. Its totient is φ = 333792.

The previous prime is 1001389. The next prime is 1001401. The reversal of 1001394 is 4931001.

It can be written as a sum of positive squares in only one way, i.e., 974169 + 27225 = 987^2 + 165^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 55633 = 1001394 / (1 + 0 + 0 + 1 + 3 + 9 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27799 + ... + 27834.

2^1001394 is an apocalyptic number.

1001394 is an abundant number, since it is smaller than the sum of its proper divisors (1168332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001394 is a wasteful number, since it uses less digits than its factorization.

1001394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55641 (or 55638 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1001394 is about 1000.6967572647. The cubic root of 1001394 is about 100.0464450919.

Adding to 1001394 its reverse (4931001), we get a palindrome (5932395).

The spelling of 1001394 in words is "one million, one thousand, three hundred ninety-four".