400338212 has 12 divisors (see below), whose sum is σ = 701552796. Its totient is φ = 199894560.

The previous prime is 400338167. The next prime is 400338217. The reversal of 400338212 is 212833004.

It can be written as a sum of positive squares in 2 ways, for example, as 217385536 + 182952676 = 14744^2 + 13526^2 .

It is not an unprimeable number, because it can be changed into a prime (400338217) 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, 65339 + ... + 71202.

It is an arithmetic number, because the mean of its divisors is an integer number (58462733).

Almost surely, 2^400338212 is an apocalyptic number.

It is an amenable number.

400338212 is a deficient number, since it is larger than the sum of its proper divisors (301214584).

400338212 is a wasteful number, since it uses less digits than its factorization.

400338212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137278 (or 137276 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 400338212 is about 20008.4535134528. The cubic root of 400338212 is about 737.0139051704.

The spelling of 400338212 in words is "four hundred million, three hundred thirty-eight thousand, two hundred twelve".