100439807 has 4 divisors (see below), whose sum is σ = 108165960. Its totient is φ = 92713656.

The previous prime is 100439803. The next prime is 100439819. The reversal of 100439807 is 708934001.

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 100439807 - 2² = 100439803 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 (100439803) 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, 3863057 + ... + 3863082.

It is an arithmetic number, because the mean of its divisors is an integer number (27041490).

Almost surely, 2^100439807 is an apocalyptic number.

100439807 is a deficient number, since it is larger than the sum of its proper divisors (7726153).

100439807 is an equidigital number, since it uses as much as digits as its factorization.

100439807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726152.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 100439807 is about 10021.9662242496. The cubic root of 100439807 is about 464.8383559634.

The spelling of 100439807 in words is "one hundred million, four hundred thirty-nine thousand, eight hundred seven".