400034203 has 4 divisors (see below), whose sum is σ = 409337368. Its totient is φ = 390731040.

The previous prime is 400034179. The next prime is 400034221. The reversal of 400034203 is 302430004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400034203 - 2²¹ = 397937051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400034003) 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, 4651518 + ... + 4651603.

It is an arithmetic number, because the mean of its divisors is an integer number (102334342).

Almost surely, 2^400034203 is an apocalyptic number.

400034203 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

400034203 is a deficient number, since it is larger than the sum of its proper divisors (9303165).

400034203 is an equidigital number, since it uses as much as digits as its factorization.

400034203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9303164.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 400034203 is about 20000.8550567220. The cubic root of 400034203 is about 736.8272999511.

Adding to 400034203 its reverse (302430004), we get a palindrome (702464207).

The spelling of 400034203 in words is "four hundred million, thirty-four thousand, two hundred three".