409749734906 has 16 divisors (see below), whose sum is σ = 617782545600. Its totient is φ = 203822451360.

The previous prime is 409749734903. The next prime is 409749734923. The reversal of 409749734906 is 609437947904.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (409749734903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3816005 + ... + 3921911.

It is an arithmetic number, because the mean of its divisors is an integer number (38611409100).

Almost surely, 2^409749734906 is an apocalyptic number.

409749734906 is a deficient number, since it is larger than the sum of its proper divisors (208032810694).

409749734906 is a wasteful number, since it uses less digits than its factorization.

409749734906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115829.

The product of its (nonzero) digits is 41150592, while the sum is 62.

The spelling of 409749734906 in words is "four hundred nine billion, seven hundred forty-nine million, seven hundred thirty-four thousand, nine hundred six".