400003740040 has 16 divisors (see below), whose sum is σ = 900008415180. Its totient is φ = 160001496000.

The previous prime is 400003740007. The next prime is 400003740061. The reversal of 400003740040 is 40047300004.

It can be written as a sum of positive squares in 2 ways, for example, as 372366007524 + 27637732516 = 610218^2 + 166246^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400003739993 and 400003740020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000046711 + ... + 5000046790.

Almost surely, 2^400003740040 is an apocalyptic number.

400003740040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400003740040 is an abundant number, since it is smaller than the sum of its proper divisors (500004675140).

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

400003740040 is a wasteful number, since it uses less digits than its factorization.

400003740040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000093512 (or 10000093508 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The spelling of 400003740040 in words is "four hundred billion, three million, seven hundred forty thousand, forty".