1408545 has 24 divisors (see below), whose sum is σ = 2471976. Its totient is φ = 741888.

The previous prime is 1408529. The next prime is 1408567. The reversal of 1408545 is 5458041.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 1361889 = 216^2 + 1167^2 .

It is not a de Polignac number, because 1408545 - 2⁴ = 1408529 is a prime.

It is a Curzon number.

1408545 is a lucky number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4947 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (102999).

2^1408545 is an apocalyptic number.

1408545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1408545 is a deficient number, since it is larger than the sum of its proper divisors (1063431).

1408545 is a wasteful number, since it uses less digits than its factorization.

1408545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1408545 is about 1186.8213850449. The cubic root of 1408545 is about 112.0960326433.

It can be divided in two parts, 1408 and 545, that added together give a triangular number (1953 = T₆₂).

The spelling of 1408545 in words is "one million, four hundred eight thousand, five hundred forty-five".