400535343 has 12 divisors (see below), whose sum is σ = 623055160. Its totient is φ = 246483216.

The previous prime is 400535329. The next prime is 400535381. The reversal of 400535343 is 343535004.

It is a happy number.

It is not a de Polignac number, because 400535343 - 2¹⁰ = 400534319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400535383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1711573 + ... + 1711806.

Almost surely, 2^400535343 is an apocalyptic number.

400535343 is a deficient number, since it is larger than the sum of its proper divisors (222519817).

400535343 is a wasteful number, since it uses less digits than its factorization.

400535343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423398 (or 3423395 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 400535343 is about 20013.3790999921. The cubic root of 400535343 is about 737.1348566085.

The spelling of 400535343 in words is "four hundred million, five hundred thirty-five thousand, three hundred forty-three".