1408669 has 2 divisors, whose sum is σ = 1408670. Its totient is φ = 1408668.

The previous prime is 1408663. The next prime is 1408697. The reversal of 1408669 is 9668041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1276900 + 131769 = 1130^2 + 363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1408669 - 2³ = 1408661 is a prime.

It is a super-2 number, since 2×1408669² = 3968696703122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1408661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704334 + 704335.

It is an arithmetic number, because the mean of its divisors is an integer number (704335).

2^1408669 is an apocalyptic number.

It is an amenable number.

1408669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1408669 is an equidigital number, since it uses as much as digits as its factorization.

1408669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1408669 is about 1186.8736242751. The cubic root of 1408669 is about 112.0993219714.

The spelling of 1408669 in words is "one million, four hundred eight thousand, six hundred sixty-nine".