400500436 has 24 divisors (see below), whose sum is σ = 816117120. Its totient is φ = 168403872.

The previous prime is 400500431. The next prime is 400500461. The reversal of 400500436 is 634005004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400500431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133456 + ... + 136423.

It is an arithmetic number, because the mean of its divisors is an integer number (34004880).

Almost surely, 2^400500436 is an apocalyptic number.

It is an amenable number.

400500436 is an abundant number, since it is smaller than the sum of its proper divisors (415616684).

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

400500436 is a wasteful number, since it uses less digits than its factorization.

400500436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269943 (or 269941 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 400500436 is about 20012.5069893804. The cubic root of 400500436 is about 737.1134420073.

The spelling of 400500436 in words is "four hundred million, five hundred thousand, four hundred thirty-six".