400034212 has 24 divisors (see below), whose sum is σ = 721193760. Its totient is φ = 194034240.

The previous prime is 400034179. The next prime is 400034221. The reversal of 400034212 is 212430004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22543 + ... + 36169.

It is an arithmetic number, because the mean of its divisors is an integer number (30049740).

Almost surely, 2^400034212 is an apocalyptic number.

It is an amenable number.

400034212 is a deficient number, since it is larger than the sum of its proper divisors (321159548).

400034212 is a wasteful number, since it uses less digits than its factorization.

400034212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13851 (or 13849 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400034212 is about 20000.8552817123. The cubic root of 400034212 is about 736.8273054768.

Adding to 400034212 its reverse (212430004), we get a palindrome (612464216).

The spelling of 400034212 in words is "four hundred million, thirty-four thousand, two hundred twelve".