100399599 has 12 divisors (see below), whose sum is σ = 146858400. Its totient is φ = 66085344.

The previous prime is 100399589. The next prime is 100399613. The reversal of 100399599 is 995993001.

It is not a de Polignac number, because 100399599 - 2⁴ = 100399583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100399549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69894 + ... + 71315.

It is an arithmetic number, because the mean of its divisors is an integer number (12238200).

Almost surely, 2^100399599 is an apocalyptic number.

100399599 is a deficient number, since it is larger than the sum of its proper divisors (46458801).

100399599 is a wasteful number, since it uses less digits than its factorization.

100399599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141294 (or 141291 counting only the distinct ones).

The product of its (nonzero) digits is 98415, while the sum is 45.

The square root of 100399599 is about 10019.9600298604. The cubic root of 100399599 is about 464.7763197524.

The spelling of 100399599 in words is "one hundred million, three hundred ninety-nine thousand, five hundred ninety-nine".