40404880406 has 32 divisors (see below), whose sum is σ = 66946500000. Its totient is φ = 18136890880.

The previous prime is 40404880391. The next prime is 40404880463. The reversal of 40404880406 is 60408840404.

It is a self number, because there is not a number n which added to its sum of digits gives 40404880406.

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, 531470 + ... + 602718.

It is an arithmetic number, because the mean of its divisors is an integer number (2092078125).

Almost surely, 2^40404880406 is an apocalyptic number.

40404880406 is a deficient number, since it is larger than the sum of its proper divisors (26541619594).

40404880406 is a wasteful number, since it uses less digits than its factorization.

40404880406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71584.

The product of its (nonzero) digits is 98304, while the sum is 38.

The spelling of 40404880406 in words is "forty billion, four hundred four million, eight hundred eighty thousand, four hundred six".