400434150 has 96 divisors (see below), whose sum is σ = 1056816288. Its totient is φ = 99993600.

The previous prime is 400434137. The next prime is 400434157. The reversal of 400434150 is 51434004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400434157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 950940 + ... + 951360.

It is an arithmetic number, because the mean of its divisors is an integer number (11008503).

Almost surely, 2^400434150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400434150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528408144).

400434150 is an abundant number, since it is smaller than the sum of its proper divisors (656382138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400434150 is a wasteful number, since it uses less digits than its factorization.

400434150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 400434150 is about 20010.8508065000. The cubic root of 400434150 is about 737.0727737224.

Adding to 400434150 its reverse (51434004), we get a palindrome (451868154).

The spelling of 400434150 in words is "four hundred million, four hundred thirty-four thousand, one hundred fifty".