1408069 has 8 divisors (see below), whose sum is σ = 1534680. Its totient is φ = 1284096.

The previous prime is 1408067. The next prime is 1408079. The reversal of 1408069 is 9608041.

It can be written as a sum of positive squares in 4 ways, for example, as 3844 + 1404225 = 62^2 + 1185^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1408069 - 2¹ = 1408067 is a prime.

It is a super-2 number, since 2×1408069² = 3965316617522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1408067) 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 7 ways as a sum of consecutive naturals, for example, 549 + ... + 1765.

It is an arithmetic number, because the mean of its divisors is an integer number (191835).

2^1408069 is an apocalyptic number.

It is an amenable number.

1408069 is a deficient number, since it is larger than the sum of its proper divisors (126611).

1408069 is a wasteful number, since it uses less digits than its factorization.

1408069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1408069 is about 1186.6208324482. The cubic root of 1408069 is about 112.0834040743.

Subtracting from 1408069 its sum of digits (28), we obtain a palindrome (1408041).

The spelling of 1408069 in words is "one million, four hundred eight thousand, sixty-nine".