405344622 has 16 divisors (see below), whose sum is σ = 818128080. Its totient is φ = 133875072.

The previous prime is 405344587. The next prime is 405344659. The reversal of 405344622 is 226443504.

It is a self number, because there is not a number n which added to its sum of digits gives 405344622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309243 + ... + 310550.

It is an arithmetic number, because the mean of its divisors is an integer number (51133005).

Almost surely, 2^405344622 is an apocalyptic number.

405344622 is an abundant number, since it is smaller than the sum of its proper divisors (412783458).

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

405344622 is a wasteful number, since it uses less digits than its factorization.

405344622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619907.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 405344622 is about 20133.1721792667. The cubic root of 405344622 is about 740.0734173567.

The spelling of 405344622 in words is "four hundred five million, three hundred forty-four thousand, six hundred twenty-two".