405246440044 has 24 divisors (see below), whose sum is σ = 714426436080. Its totient is φ = 201124886016.

The previous prime is 405246439987. The next prime is 405246440083. The reversal of 405246440044 is 440044642504.

It is a junction number, because it is equal to n+sod(n) for n = 405246439985 and 405246440012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6907924 + ... + 6966340.

It is an arithmetic number, because the mean of its divisors is an integer number (29767768170).

Almost surely, 2^405246440044 is an apocalyptic number.

It is an amenable number.

405246440044 is a deficient number, since it is larger than the sum of its proper divisors (309179996036).

405246440044 is a wasteful number, since it uses less digits than its factorization.

405246440044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71217 (or 71215 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 37.

The spelling of 405246440044 in words is "four hundred five billion, two hundred forty-six million, four hundred forty thousand, forty-four".