544643406 has 32 divisors (see below), whose sum is σ = 1214174880. Its totient is φ = 180969408.

The previous prime is 544643401. The next prime is 544643447. The reversal of 544643406 is 604346445.

544643406 is a `hidden beast` number, since 5 + 4 + 4 + 643 + 4 + 0 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544643401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210 + ... + 33026.

It is an arithmetic number, because the mean of its divisors is an integer number (37942965).

Almost surely, 2^544643406 is an apocalyptic number.

544643406 is an abundant number, since it is smaller than the sum of its proper divisors (669531474).

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

544643406 is a wasteful number, since it uses less digits than its factorization.

544643406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32145 (or 32139 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 544643406 is about 23337.5964057998. The cubic root of 544643406 is about 816.6527270886.

The spelling of 544643406 in words is "five hundred forty-four million, six hundred forty-three thousand, four hundred six".