1000406 has 16 divisors (see below), whose sum is σ = 1682640. Its totient is φ = 442080.

The previous prime is 1000403. The next prime is 1000409. The reversal of 1000406 is 6040001.

It is an interprime number because it is at equal distance from previous prime (1000403) and next prime (1000409).

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a pancake number, because a pancake can be divided into 1000406 parts by 1414 straight cuts.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (105165).

2^1000406 is an apocalyptic number.

1000406 is a deficient number, since it is larger than the sum of its proper divisors (682234).

1000406 is a wasteful number, since it uses less digits than its factorization.

1000406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1000406 is about 1000.2029793997. The cubic root of 1000406 is about 100.0135315022.

Adding to 1000406 its reverse (6040001), we get a palindrome (7040407).

The spelling of 1000406 in words is "one million, four hundred six", and thus it is an aban number.