406709525444 has 36 divisors (see below), whose sum is σ = 756214403700. Its totient is φ = 191356569600.

The previous prime is 406709525423. The next prime is 406709525449. The reversal of 406709525444 is 444525907604.

It can be written as a sum of positive squares in 6 ways, for example, as 230361601600 + 176347923844 = 479960^2 + 419938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 406709525392 and 406709525401.

It is not an unprimeable number, because it can be changed into a prime (406709525449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6675632 + ... + 6736280.

Almost surely, 2^406709525444 is an apocalyptic number.

It is an amenable number.

406709525444 is a deficient number, since it is larger than the sum of its proper divisors (349504878256).

406709525444 is a wasteful number, since it uses less digits than its factorization.

406709525444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66488 (or 66469 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 50.

The spelling of 406709525444 in words is "four hundred six billion, seven hundred nine million, five hundred twenty-five thousand, four hundred forty-four".