100038409 has 2 divisors, whose sum is σ = 100038410. Its totient is φ = 100038408.

The previous prime is 100038329. The next prime is 100038481. The reversal of 100038409 is 904830001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99900025 + 138384 = 9995^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 100038409 - 2¹⁵ = 100005641 is a prime.

It is not a weakly prime, because it can be changed into another prime (100038509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50019204 + 50019205.

It is an arithmetic number, because the mean of its divisors is an integer number (50019205).

Almost surely, 2^100038409 is an apocalyptic number.

It is an amenable number.

100038409 is a deficient number, since it is larger than the sum of its proper divisors (1).

100038409 is an equidigital number, since it uses as much as digits as its factorization.

100038409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 100038409 is about 10001.9202656290. The cubic root of 100038409 is about 464.2183020164.

The spelling of 100038409 in words is "one hundred million, thirty-eight thousand, four hundred nine".