400412473 has 2 divisors, whose sum is σ = 400412474. Its totient is φ = 400412472.

The previous prime is 400412447. The next prime is 400412521. The reversal of 400412473 is 374214004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299047849 + 101364624 = 17293^2 + 10068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400412473 is a prime.

It is not a weakly prime, because it can be changed into another prime (400412443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200206236 + 200206237.

It is an arithmetic number, because the mean of its divisors is an integer number (200206237).

Almost surely, 2^400412473 is an apocalyptic number.

It is an amenable number.

400412473 is a deficient number, since it is larger than the sum of its proper divisors (1).

400412473 is an equidigital number, since it uses as much as digits as its factorization.

400412473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 400412473 is about 20010.3091680264. The cubic root of 400412473 is about 737.0594733127.

Adding to 400412473 its reverse (374214004), we get a palindrome (774626477).

The spelling of 400412473 in words is "four hundred million, four hundred twelve thousand, four hundred seventy-three".