400434032 has 40 divisors (see below), whose sum is σ = 786809760. Its totient is φ = 197406720.

The previous prime is 400434019. The next prime is 400434049. The reversal of 400434032 is 230434004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400433995 and 400434013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435269 + ... + 436187.

It is an arithmetic number, because the mean of its divisors is an integer number (19670244).

Almost surely, 2^400434032 is an apocalyptic number.

It is an amenable number.

400434032 is a deficient number, since it is larger than the sum of its proper divisors (386375728).

400434032 is a wasteful number, since it uses less digits than its factorization.

400434032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 400434032 is about 20010.8478580994. The cubic root of 400434032 is about 737.0727013222.

Adding to 400434032 its reverse (230434004), we get a palindrome (630868036).

The spelling of 400434032 in words is "four hundred million, four hundred thirty-four thousand, thirty-two".