400450343 has 8 divisors (see below), whose sum is σ = 415149696. Its totient is φ = 385862400.

The previous prime is 400450319. The next prime is 400450381. The reversal of 400450343 is 343054004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 400450343 - 2⁶ = 400450279 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 (400458343) 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, 20498 + ... + 34943.

It is an arithmetic number, because the mean of its divisors is an integer number (51893712).

Almost surely, 2^400450343 is an apocalyptic number.

400450343 is a deficient number, since it is larger than the sum of its proper divisors (14699353).

400450343 is a wasteful number, since it uses less digits than its factorization.

400450343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55705.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 400450343 is about 20011.2554078948. The cubic root of 400450343 is about 737.0827089877.

The spelling of 400450343 in words is "four hundred million, four hundred fifty thousand, three hundred forty-three".