409397101 has 4 divisors (see below), whose sum is σ = 410281792. Its totient is φ = 408512412.

The previous prime is 409397099. The next prime is 409397141. The reversal of 409397101 is 101793904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 409397101 - 2¹ = 409397099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409397141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441651 + ... + 442576.

It is an arithmetic number, because the mean of its divisors is an integer number (102570448).

Almost surely, 2^409397101 is an apocalyptic number.

It is an amenable number.

409397101 is a deficient number, since it is larger than the sum of its proper divisors (884691).

409397101 is an equidigital number, since it uses as much as digits as its factorization.

409397101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884690.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 409397101 is about 20233.5637246630. The cubic root of 409397101 is about 742.5315663363.

The spelling of 409397101 in words is "four hundred nine million, three hundred ninety-seven thousand, one hundred one".