100340409 has 16 divisors (see below), whose sum is σ = 152554752. Its totient is φ = 58115328.

The previous prime is 100340363. The next prime is 100340413. The reversal of 100340409 is 904043001.

It is not a de Polignac number, because 100340409 - 2⁷ = 100340281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100347409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75009 + ... + 76334.

It is an arithmetic number, because the mean of its divisors is an integer number (9534672).

Almost surely, 2^100340409 is an apocalyptic number.

It is an amenable number.

100340409 is a deficient number, since it is larger than the sum of its proper divisors (52214343).

100340409 is a wasteful number, since it uses less digits than its factorization.

100340409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151376.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 100340409 is about 10017.0059898155. The cubic root of 100340409 is about 464.6849664052.

The spelling of 100340409 in words is "one hundred million, three hundred forty thousand, four hundred nine".