400534396 has 6 divisors (see below), whose sum is σ = 700935200. Its totient is φ = 200267196.

The previous prime is 400534391. The next prime is 400534403. The reversal of 400534396 is 693435004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400534391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50066796 + ... + 50066803.

Almost surely, 2^400534396 is an apocalyptic number.

It is an amenable number.

400534396 is a deficient number, since it is larger than the sum of its proper divisors (300400804).

400534396 is a wasteful number, since it uses less digits than its factorization.

400534396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100133603 (or 100133601 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 400534396 is about 20013.3554408050. The cubic root of 400534396 is about 737.1342756633.

The spelling of 400534396 in words is "four hundred million, five hundred thirty-four thousand, three hundred ninety-six".