400855043 has 4 divisors (see below), whose sum is σ = 400896360. Its totient is φ = 400813728.

The previous prime is 400855033. The next prime is 400855061. The reversal of 400855043 is 340558004.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 400855043 - 2¹⁰ = 400854019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400854997 and 400855015.

It is not an unprimeable number, because it can be changed into a prime (400855033) 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, 2696 + ... + 28442.

It is an arithmetic number, because the mean of its divisors is an integer number (100224090).

Almost surely, 2^400855043 is an apocalyptic number.

400855043 is a deficient number, since it is larger than the sum of its proper divisors (41317).

400855043 is a wasteful number, since it uses less digits than its factorization.

400855043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41316.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 400855043 is about 20021.3646637785. The cubic root of 400855043 is about 737.3309269805.

The spelling of 400855043 in words is "four hundred million, eight hundred fifty-five thousand, forty-three".