406213470 has 144 divisors (see below), whose sum is σ = 1211691312. Its totient is φ = 94049280.

The previous prime is 406213463. The next prime is 406213477. The reversal of 406213470 is 74312604.

406213470 is a `hidden beast` number, since 4 + 0 + 621 + 34 + 7 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (406213463) and next prime (406213477).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406213477) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 257785 + ... + 259355.

It is an arithmetic number, because the mean of its divisors is an integer number (8414523).

Almost surely, 2^406213470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406213470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605845656).

406213470 is an abundant number, since it is smaller than the sum of its proper divisors (805477842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406213470 is a wasteful number, since it uses less digits than its factorization.

406213470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 406213470 is about 20154.7381526032. The cubic root of 406213470 is about 740.6018174659.

The spelling of 406213470 in words is "four hundred six million, two hundred thirteen thousand, four hundred seventy".