405040727400 has 96 divisors (see below), whose sum is σ = 1284826947360. Its totient is φ = 105498973440.

The previous prime is 405040727393. The next prime is 405040727477. The reversal of 405040727400 is 4727040504.

It is a super-2 number, since 2×405040727400² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7823827 + ... + 7875426.

It is an arithmetic number, because the mean of its divisors is an integer number (13383614035).

Almost surely, 2^405040727400 is an apocalyptic number.

405040727400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405040727400 is an abundant number, since it is smaller than the sum of its proper divisors (879786219960).

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

405040727400 is a wasteful number, since it uses less digits than its factorization.

405040727400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15699315 (or 15699306 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 33.

Adding to 405040727400 its reverse (4727040504), we get a palindrome (409767767904).

The spelling of 405040727400 in words is "four hundred five billion, forty million, seven hundred twenty-seven thousand, four hundred".