400304378901 has 16 divisors (see below), whose sum is σ = 614440093824. Its totient is φ = 227075683584.

The previous prime is 400304378897. The next prime is 400304378921. The reversal of 400304378901 is 109873403004.

It is not a de Polignac number, because 400304378901 - 2² = 400304378897 is a prime.

It is a super-3 number, since 3×400304378901³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400304378901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400304378921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69566880 + ... + 69572633.

It is an arithmetic number, because the mean of its divisors is an integer number (38402505864).

Almost surely, 2^400304378901 is an apocalyptic number.

It is an amenable number.

400304378901 is a deficient number, since it is larger than the sum of its proper divisors (214135714923).

400304378901 is a wasteful number, since it uses less digits than its factorization.

400304378901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139139660.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 400304378901 in words is "four hundred billion, three hundred four million, three hundred seventy-eight thousand, nine hundred one".