400874 has 4 divisors (see below), whose sum is σ = 601314. Its totient is φ = 200436.

The previous prime is 400871. The next prime is 400903. The reversal of 400874 is 478004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 235225 + 165649 = 485^2 + 407^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400874.

It is not an unprimeable number, because it can be changed into a prime (400871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100217 + ... + 100220.

2⁴⁰⁰⁸⁷⁴ is an apocalyptic number.

400874 is a deficient number, since it is larger than the sum of its proper divisors (200440).

400874 is a wasteful number, since it uses less digits than its factorization.

400874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200439.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 400874 is about 633.1461126786. The cubic root of 400874 is about 73.7342549937.

Adding to 400874 its reverse (478004), we get a palindrome (878878).

The spelling of 400874 in words is "four hundred thousand, eight hundred seventy-four".