9993157 has 8 divisors (see below), whose sum is σ = 10272416. Its totient is φ = 9716112.

The previous prime is 9993149. The next prime is 9993167. The reversal of 9993157 is 7513999.

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 9993157 - 2³ = 9993149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12823 + ... + 13579.

It is an arithmetic number, because the mean of its divisors is an integer number (1284052).

Almost surely, 2^9993157 is an apocalyptic number.

It is an amenable number.

9993157 is a deficient number, since it is larger than the sum of its proper divisors (279259).

9993157 is a wasteful number, since it uses less digits than its factorization.

9993157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107.

The product of its digits is 76545, while the sum is 43.

The square root of 9993157 is about 3161.1955017050. The cubic root of 9993157 is about 215.3943151342.

The spelling of 9993157 in words is "nine million, nine hundred ninety-three thousand, one hundred fifty-seven".