400005213 has 8 divisors (see below), whose sum is σ = 556529088. Its totient is φ = 255075744.

The previous prime is 400005211. The next prime is 400005227. The reversal of 400005213 is 312500004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400005213 - 2¹ = 400005211 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400005192 and 400005201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400005211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2898520 + ... + 2898657.

It is an arithmetic number, because the mean of its divisors is an integer number (69566136).

Almost surely, 2^400005213 is an apocalyptic number.

It is an amenable number.

400005213 is a deficient number, since it is larger than the sum of its proper divisors (156523875).

400005213 is a wasteful number, since it uses less digits than its factorization.

400005213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5797203.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 400005213 is about 20000.1303245754. The cubic root of 400005213 is about 736.8095005235.

Adding to 400005213 its reverse (312500004), we get a palindrome (712505217).

The spelling of 400005213 in words is "four hundred million, five thousand, two hundred thirteen".