406054621 has 12 divisors (see below), whose sum is σ = 476769888. Its totient is φ = 344789592.

The previous prime is 406054619. The next prime is 406054631. The reversal of 406054621 is 126450604.

It is not a de Polignac number, because 406054621 - 2¹ = 406054619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406054621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406054601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33481 + ... + 43966.

It is an arithmetic number, because the mean of its divisors is an integer number (39730824).

Almost surely, 2^406054621 is an apocalyptic number.

It is an amenable number.

406054621 is a deficient number, since it is larger than the sum of its proper divisors (70715267).

406054621 is a wasteful number, since it uses less digits than its factorization.

406054621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77568 (or 77561 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 406054621 is about 20150.7970313832. The cubic root of 406054621 is about 740.5052679052.

The spelling of 406054621 in words is "four hundred six million, fifty-four thousand, six hundred twenty-one".