409139214 has 32 divisors (see below), whose sum is σ = 893393280. Its totient is φ = 123880800.

The previous prime is 409139197. The next prime is 409139219. The reversal of 409139214 is 412931904.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409139219) 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 15 ways as a sum of consecutive naturals, for example, 139192 + ... + 142100.

It is an arithmetic number, because the mean of its divisors is an integer number (27918540).

Almost surely, 2^409139214 is an apocalyptic number.

409139214 is an abundant number, since it is smaller than the sum of its proper divisors (484254066).

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

409139214 is a wasteful number, since it uses less digits than its factorization.

409139214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 409139214 is about 20227.1899679614. The cubic root of 409139214 is about 742.3756220145.

The spelling of 409139214 in words is "four hundred nine million, one hundred thirty-nine thousand, two hundred fourteen".