1408409123 has 4 divisors (see below), whose sum is σ = 1536446328. Its totient is φ = 1280371920.

The previous prime is 1408409113. The next prime is 1408409131. The reversal of 1408409123 is 3219048041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1408409123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1408409123.

It is not an unprimeable number, because it can be changed into a prime (1408409113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64018586 + ... + 64018607.

It is an arithmetic number, because the mean of its divisors is an integer number (384111582).

Almost surely, 2^1408409123 is an apocalyptic number.

1408409123 is a deficient number, since it is larger than the sum of its proper divisors (128037205).

1408409123 is a wasteful number, since it uses less digits than its factorization.

1408409123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128037204.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1408409123 is about 37528.7772649203. Note that the first 3 decimals coincide. The cubic root of 1408409123 is about 1120.9242803417.

The spelling of 1408409123 in words is "one billion, four hundred eight million, four hundred nine thousand, one hundred twenty-three".