400472 has 16 divisors (see below), whose sum is σ = 759240. Its totient is φ = 198016.

The previous prime is 400471. The next prime is 400481. The reversal of 400472 is 274004.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 400472.

It is a congruent 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 in 3 ways as a sum of consecutive naturals, for example, 683 + ... + 1125.

2⁴⁰⁰⁴⁷² is an apocalyptic number.

It is an amenable number.

400472 is a deficient number, since it is larger than the sum of its proper divisors (358768).

400472 is a wasteful number, since it uses less digits than its factorization.

400472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 400472 is about 632.8285707836. The cubic root of 400472 is about 73.7095996289.

Adding to 400472 its reverse (274004), we get a palindrome (674476).

The spelling of 400472 in words is "four hundred thousand, four hundred seventy-two", and thus it is an iban number.