409854844642 has 32 divisors (see below), whose sum is σ = 646286002560. Its totient is φ = 194563797120.

The previous prime is 409854844591. The next prime is 409854844643. The reversal of 409854844642 is 246448458904.

It is a super-2 number, since 2×409854844642² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (409854844643) 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, 3563734 + ... + 3676942.

It is an arithmetic number, because the mean of its divisors is an integer number (20196437580).

Almost surely, 2^409854844642 is an apocalyptic number.

409854844642 is a deficient number, since it is larger than the sum of its proper divisors (236431157918).

409854844642 is a wasteful number, since it uses less digits than its factorization.

409854844642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113818.

The product of its (nonzero) digits is 35389440, while the sum is 58.

The spelling of 409854844642 in words is "four hundred nine billion, eight hundred fifty-four million, eight hundred forty-four thousand, six hundred forty-two".