400633343 has 8 divisors (see below), whose sum is σ = 456057216. Its totient is φ = 348376600.

The previous prime is 400633319. The next prime is 400633349. The reversal of 400633343 is 343336004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400633343 - 2¹⁴ = 400616959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400633349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791513 + ... + 792018.

It is an arithmetic number, because the mean of its divisors is an integer number (57007152).

Almost surely, 2^400633343 is an apocalyptic number.

400633343 is a deficient number, since it is larger than the sum of its proper divisors (55423873).

400633343 is a wasteful number, since it uses less digits than its factorization.

400633343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583565.

The product of its (nonzero) digits is 7776, while the sum is 26.

The square root of 400633343 is about 20015.8273124046. The cubic root of 400633343 is about 737.1949705921.

Adding to 400633343 its reverse (343336004), we get a palindrome (743969347).

The spelling of 400633343 in words is "four hundred million, six hundred thirty-three thousand, three hundred forty-three".