405214004 has 18 divisors (see below), whose sum is σ = 767869830. Its totient is φ = 187021536.

The previous prime is 405214003. The next prime is 405214009. The reversal of 405214004 is 400412504.

It can be written as a sum of positive squares in 3 ways, for example, as 1123600 + 404090404 = 1060^2 + 20102^2 .

It is a super-4 number, since 4×405214004⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405214001) 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, 299039 + ... + 300390.

It is an arithmetic number, because the mean of its divisors is an integer number (42659435).

Almost surely, 2^405214004 is an apocalyptic number.

It is an amenable number.

405214004 is a deficient number, since it is larger than the sum of its proper divisors (362655826).

405214004 is a wasteful number, since it uses less digits than its factorization.

405214004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599459 (or 599444 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 405214004 is about 20129.9280674323. The cubic root of 405214004 is about 739.9939152166.

Adding to 405214004 its reverse (400412504), we get a palindrome (805626508).

The spelling of 405214004 in words is "four hundred five million, two hundred fourteen thousand, four".