1478885 has 4 divisors (see below), whose sum is σ = 1774668. Its totient is φ = 1183104.

The previous prime is 1478863. The next prime is 1478887. The reversal of 1478885 is 5888741.

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

It can be written as a sum of positive squares in 2 ways, for example, as 784996 + 693889 = 886^2 + 833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1478885 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1478887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147884 + ... + 147893.

It is an arithmetic number, because the mean of its divisors is an integer number (443667).

2^1478885 is an apocalyptic number.

It is an amenable number.

1478885 is a deficient number, since it is larger than the sum of its proper divisors (295783).

1478885 is an equidigital number, since it uses as much as digits as its factorization.

1478885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295782.

The product of its digits is 71680, while the sum is 41.

The square root of 1478885 is about 1216.0941575388. The cubic root of 1478885 is about 113.9317586864.

The spelling of 1478885 in words is "one million, four hundred seventy-eight thousand, eight hundred eighty-five".