100153993 has 4 divisors (see below), whose sum is σ = 100192528. Its totient is φ = 100115460.

The previous prime is 100153981. The next prime is 100154017. The reversal of 100153993 is 399351001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100153993 - 2⁹ = 100153481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100153903) 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, 15063 + ... + 20668.

It is an arithmetic number, because the mean of its divisors is an integer number (25048132).

Almost surely, 2^100153993 is an apocalyptic number.

It is an amenable number.

100153993 is a deficient number, since it is larger than the sum of its proper divisors (38535).

100153993 is an equidigital number, since it uses as much as digits as its factorization.

100153993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38534.

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 100153993 is about 10007.6966880497. The cubic root of 100153993 is about 464.3970185623.

The spelling of 100153993 in words is "one hundred million, one hundred fifty-three thousand, nine hundred ninety-three".