405240400084 has 48 divisors (see below), whose sum is σ = 786113814528. Its totient is φ = 181613069568.

The previous prime is 405240400057. The next prime is 405240400111. The reversal of 405240400084 is 480004042504.

It is an interprime number because it is at equal distance from previous prime (405240400057) and next prime (405240400111).

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, 342409 + ... + 963184.

It is an arithmetic number, because the mean of its divisors is an integer number (16377371136).

Almost surely, 2^405240400084 is an apocalyptic number.

It is an amenable number.

405240400084 is a deficient number, since it is larger than the sum of its proper divisors (380873414444).

405240400084 is a wasteful number, since it uses less digits than its factorization.

405240400084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305784 (or 1305782 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 405240400084 its reverse (480004042504), we get a palindrome (885244442588).

The spelling of 405240400084 in words is "four hundred five billion, two hundred forty million, four hundred thousand, eighty-four".