400505350 has 24 divisors (see below), whose sum is σ = 851360688. Its totient is φ = 137316000.

The previous prime is 400505323. The next prime is 400505381. The reversal of 400505350 is 53505004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571801 + ... + 572500.

It is an arithmetic number, because the mean of its divisors is an integer number (35473362).

Almost surely, 2^400505350 is an apocalyptic number.

400505350 is an abundant number, since it is smaller than the sum of its proper divisors (450855338).

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

400505350 is a wasteful number, since it uses less digits than its factorization.

400505350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144320 (or 1144315 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 400505350 is about 20012.6297622277. The cubic root of 400505350 is about 737.1164567028.

The spelling of 400505350 in words is "four hundred million, five hundred five thousand, three hundred fifty".