400144406802 has 16 divisors (see below), whose sum is σ = 914615787072. Its totient is φ = 114326973360.

The previous prime is 400144406731. The next prime is 400144406807. The reversal of 400144406802 is 208604441004.

It is not an unprimeable number, because it can be changed into a prime (400144406807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4763623849 + ... + 4763623932.

It is an arithmetic number, because the mean of its divisors is an integer number (57163486692).

Almost surely, 2^400144406802 is an apocalyptic number.

400144406802 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

400144406802 is an abundant number, since it is smaller than the sum of its proper divisors (514471380270).

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

400144406802 is a wasteful number, since it uses less digits than its factorization.

400144406802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9527247793.

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 400144406802 its reverse (208604441004), we get a palindrome (608748847806).

The spelling of 400144406802 in words is "four hundred billion, one hundred forty-four million, four hundred six thousand, eight hundred two".