100338409 has 4 divisors (see below), whose sum is σ = 102039120. Its totient is φ = 98637700.

The previous prime is 100338383. The next prime is 100338419. The reversal of 100338409 is 904833001.

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 100338409 - 2¹⁵ = 100305641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100338419) 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, 850267 + ... + 850384.

It is an arithmetic number, because the mean of its divisors is an integer number (25509780).

Almost surely, 2^100338409 is an apocalyptic number.

It is an amenable number.

100338409 is a deficient number, since it is larger than the sum of its proper divisors (1700711).

100338409 is an equidigital number, since it uses as much as digits as its factorization.

100338409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700710.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 100338409 is about 10016.9061590892. The cubic root of 100338409 is about 464.6818789946.

The spelling of 100338409 in words is "one hundred million, three hundred thirty-eight thousand, four hundred nine".