400342412 has 6 divisors (see below), whose sum is σ = 700599228. Its totient is φ = 200171204.

The previous prime is 400342399. The next prime is 400342433. The reversal of 400342412 is 214243004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50042798 + ... + 50042805.

It is an arithmetic number, because the mean of its divisors is an integer number (116766538).

Almost surely, 2^400342412 is an apocalyptic number.

It is an amenable number.

400342412 is a deficient number, since it is larger than the sum of its proper divisors (300256816).

400342412 is a wasteful number, since it uses less digits than its factorization.

400342412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100085607 (or 100085605 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400342412 is about 20008.5584688153. The cubic root of 400342412 is about 737.0164825308.

Adding to 400342412 its reverse (214243004), we get a palindrome (614585416).

The spelling of 400342412 in words is "four hundred million, three hundred forty-two thousand, four hundred twelve".