1040385405 has 16 divisors (see below), whose sum is σ = 1668046464. Its totient is φ = 553728960.

The previous prime is 1040385391. The next prime is 1040385419. The reversal of 1040385405 is 5045830401.

1040385405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1040385391) and next prime (1040385419).

It is not a de Polignac number, because 1040385405 - 2¹³ = 1040377213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63906 + ... + 78515.

It is an arithmetic number, because the mean of its divisors is an integer number (104252904).

Almost surely, 2^1040385405 is an apocalyptic number.

1040385405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1040385405 is a deficient number, since it is larger than the sum of its proper divisors (627661059).

1040385405 is a wasteful number, since it uses less digits than its factorization.

1040385405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142916.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1040385405 is about 32255.0058905591. The cubic root of 1040385405 is about 1013.2845411521.

The spelling of 1040385405 in words is "one billion, forty million, three hundred eighty-five thousand, four hundred five".