400941 has 6 divisors (see below), whose sum is σ = 579150. Its totient is φ = 267288.

The previous prime is 400931. The next prime is 400943. The reversal of 400941 is 149004.

It can be written as a sum of positive squares in only one way, i.e., 275625 + 125316 = 525^2 + 354^2 .

It is not a de Polignac number, because 400941 - 2⁹ = 400429 is a prime.

It is a Curzon number.

400941 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22266 + ... + 22283.

It is an arithmetic number, because the mean of its divisors is an integer number (96525).

2⁴⁰⁰⁹⁴¹ is an apocalyptic number.

It is an amenable number.

400941 is a deficient number, since it is larger than the sum of its proper divisors (178209).

400941 is a wasteful number, since it uses less digits than its factorization.

400941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44555 (or 44552 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 400941 is about 633.1990208457. The cubic root of 400941 is about 73.7383626184.

Adding to 400941 its reverse (149004), we get a palindrome (549945).

The spelling of 400941 in words is "four hundred thousand, nine hundred forty-one".