400411955 has 16 divisors (see below), whose sum is σ = 490878144. Its totient is φ = 313474560.

The previous prime is 400411951. The next prime is 400411969. The reversal of 400411955 is 559114004.

It is not a de Polignac number, because 400411955 - 2² = 400411951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400411951) 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 15 ways as a sum of consecutive naturals, for example, 44519 + ... + 52751.

It is an arithmetic number, because the mean of its divisors is an integer number (30679884).

Almost surely, 2^400411955 is an apocalyptic number.

400411955 is a deficient number, since it is larger than the sum of its proper divisors (90466189).

400411955 is a wasteful number, since it uses less digits than its factorization.

400411955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8446.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 400411955 is about 20010.2962246939. The cubic root of 400411955 is about 737.0591554763.

Adding to 400411955 its reverse (559114004), we get a palindrome (959525959).

The spelling of 400411955 in words is "four hundred million, four hundred eleven thousand, nine hundred fifty-five".