100019399 has 8 divisors (see below), whose sum is σ = 103963440. Its totient is φ = 96140736.

The previous prime is 100019393. The next prime is 100019407. The reversal of 100019399 is 993910001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100019399 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 (100019393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13214 + ... + 19355.

It is an arithmetic number, because the mean of its divisors is an integer number (12995430).

Almost surely, 2^100019399 is an apocalyptic number.

100019399 is a deficient number, since it is larger than the sum of its proper divisors (3944041).

100019399 is an equidigital number, since it uses as much as digits as its factorization.

100019399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32689.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 100019399 is about 10000.9699029644. The cubic root of 100019399 is about 464.1888954813.

The spelling of 100019399 in words is "one hundred million, nineteen thousand, three hundred ninety-nine".