400829534240 has 24 divisors (see below), whose sum is σ = 946959775020. Its totient is φ = 160331813632.

The previous prime is 400829534207. The next prime is 400829534243. The reversal of 400829534240 is 42435928004.

It can be written as a sum of positive squares in 2 ways, for example, as 396713541904 + 4115992336 = 629852^2 + 64156^2 .

It is not an unprimeable number, because it can be changed into a prime (400829534243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252592135 + ... + 1252592454.

Almost surely, 2^400829534240 is an apocalyptic number.

400829534240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400829534240 is an abundant number, since it is smaller than the sum of its proper divisors (546130240780).

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

400829534240 is a wasteful number, since it uses less digits than its factorization.

400829534240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505184604 (or 2505184596 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 400829534240 in words is "four hundred billion, eight hundred twenty-nine million, five hundred thirty-four thousand, two hundred forty".