409122447 has 4 divisors (see below), whose sum is σ = 545496600. Its totient is φ = 272748296.

The previous prime is 409122433. The next prime is 409122457. The reversal of 409122447 is 744221904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 409122447 - 2¹⁴ = 409106063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409122457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68187072 + ... + 68187077.

It is an arithmetic number, because the mean of its divisors is an integer number (136374150).

Almost surely, 2^409122447 is an apocalyptic number.

409122447 is a deficient number, since it is larger than the sum of its proper divisors (136374153).

409122447 is a wasteful number, since it uses less digits than its factorization.

409122447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136374152.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 409122447 is about 20226.7754968507. The cubic root of 409122447 is about 742.3654807377.

The spelling of 409122447 in words is "four hundred nine million, one hundred twenty-two thousand, four hundred forty-seven".