100387405 has 16 divisors (see below), whose sum is σ = 122189184. Its totient is φ = 79168320.

The previous prime is 100387403. The next prime is 100387411. The reversal of 100387405 is 504783001.

It is not a de Polignac number, because 100387405 - 2¹ = 100387403 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 (100387403) 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 15 ways as a sum of consecutive naturals, for example, 204210 + ... + 204700.

It is an arithmetic number, because the mean of its divisors is an integer number (7636824).

Almost surely, 2^100387405 is an apocalyptic number.

It is an amenable number.

100387405 is a deficient number, since it is larger than the sum of its proper divisors (21801779).

100387405 is a wasteful number, since it uses less digits than its factorization.

100387405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 100387405 is about 10019.3515259222. The cubic root of 100387405 is about 464.7575025726.

The spelling of 100387405 in words is "one hundred million, three hundred eighty-seven thousand, four hundred five".