100863993 has 8 divisors (see below), whose sum is σ = 140332608. Its totient is φ = 64319024.

The previous prime is 100863991. The next prime is 100864003. The reversal of 100863993 is 399368001.

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

It is a cyclic number.

It is not a de Polignac number, because 100863993 - 2¹ = 100863991 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100863991) 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, 730830 + ... + 730967.

It is an arithmetic number, because the mean of its divisors is an integer number (17541576).

Almost surely, 2^100863993 is an apocalyptic number.

It is an amenable number.

100863993 is a deficient number, since it is larger than the sum of its proper divisors (39468615).

100863993 is a wasteful number, since it uses less digits than its factorization.

100863993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461823.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 100863993 is about 10043.1067404464. The cubic root of 100863993 is about 465.4918186313.

The spelling of 100863993 in words is "one hundred million, eight hundred sixty-three thousand, nine hundred ninety-three".