100397047 has 4 divisors (see below), whose sum is σ = 104762160. Its totient is φ = 96031936.

The previous prime is 100397039. The next prime is 100397051. The reversal of 100397047 is 740793001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100397047 - 2³ = 100397039 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 (100397057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2182522 + ... + 2182567.

It is an arithmetic number, because the mean of its divisors is an integer number (26190540).

Almost surely, 2^100397047 is an apocalyptic number.

100397047 is a deficient number, since it is larger than the sum of its proper divisors (4365113).

100397047 is an equidigital number, since it uses as much as digits as its factorization.

100397047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4365112.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 100397047 is about 10019.8326832338. The cubic root of 100397047 is about 464.7723817578.

The spelling of 100397047 in words is "one hundred million, three hundred ninety-seven thousand, forty-seven".