405734705940 has 96 divisors (see below), whose sum is σ = 1151512838784. Its totient is φ = 106731233280.

The previous prime is 405734705939. The next prime is 405734705977. The reversal of 405734705940 is 49507437504.

It is a self number, because there is not a number n which added to its sum of digits gives 405734705940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1673200 + ... + 1900280.

It is an arithmetic number, because the mean of its divisors is an integer number (11994925404).

Almost surely, 2^405734705940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405734705940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575756419392).

405734705940 is an abundant number, since it is smaller than the sum of its proper divisors (745778132844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405734705940 is a wasteful number, since it uses less digits than its factorization.

405734705940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227497 (or 227495 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 405734705940 in words is "four hundred five billion, seven hundred thirty-four million, seven hundred five thousand, nine hundred forty".