400474 has 4 divisors (see below), whose sum is σ = 600714. Its totient is φ = 200236.

The previous prime is 400471. The next prime is 400481. The reversal of 400474 is 474004.

It is a happy number.

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., 294849 + 105625 = 543^2 + 325^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (400471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100117 + ... + 100120.

2⁴⁰⁰⁴⁷⁴ is an apocalyptic number.

400474 is a deficient number, since it is larger than the sum of its proper divisors (200240).

400474 is a wasteful number, since it uses less digits than its factorization.

400474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200239.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 400474 is about 632.8301509884. The cubic root of 400474 is about 73.7097223332.

Adding to 400474 its reverse (474004), we get a palindrome (874478).

The spelling of 400474 in words is "four hundred thousand, four hundred seventy-four", and thus it is an iban number.