409393194 has 16 divisors (see below), whose sum is σ = 935755968. Its totient is φ = 116969472.

The previous prime is 409393151. The next prime is 409393199. The reversal of 409393194 is 491393904.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 9747457 = 409393194 / (4 + 0 + 9 + 3 + 9 + 3 + 1 + 9 + 4).

It is not an unprimeable number, because it can be changed into a prime (409393199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4873687 + ... + 4873770.

It is an arithmetic number, because the mean of its divisors is an integer number (58484748).

Almost surely, 2^409393194 is an apocalyptic number.

409393194 is an abundant number, since it is smaller than the sum of its proper divisors (526362774).

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

409393194 is a wasteful number, since it uses less digits than its factorization.

409393194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747469.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 409393194 is about 20233.4671769324. The cubic root of 409393194 is about 742.5292042612.

The spelling of 409393194 in words is "four hundred nine million, three hundred ninety-three thousand, one hundred ninety-four".