1405938885 has 24 divisors (see below), whose sum is σ = 2435855904. Its totient is φ = 692153280.

The previous prime is 1405938857. The next prime is 1405938893. The reversal of 1405938885 is 5888395041.

It is not a de Polignac number, because 1405938885 - 2¹⁰ = 1405937861 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 274771 + ... + 279840.

It is an arithmetic number, because the mean of its divisors is an integer number (101493996).

Almost surely, 2^1405938885 is an apocalyptic number.

1405938885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1405938885 is a deficient number, since it is larger than the sum of its proper divisors (1029917019).

1405938885 is a wasteful number, since it uses less digits than its factorization.

1405938885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554645 (or 554632 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The square root of 1405938885 is about 37495.8515705404. The cubic root of 1405938885 is about 1120.2685593759.

The spelling of 1405938885 in words is "one billion, four hundred five million, nine hundred thirty-eight thousand, eight hundred eighty-five".