9149993 has 4 divisors (see below), whose sum is σ = 9465540. Its totient is φ = 8834448.

The previous prime is 9149981. The next prime is 9149999. The reversal of 9149993 is 3999419.

9149993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3999419 = 29 ⋅137911.

It can be written as a sum of positive squares in 2 ways, for example, as 3988009 + 5161984 = 1997^2 + 2272^2 .

It is a cyclic number.

It is not a de Polignac number, because 9149993 - 2⁴ = 9149977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9149999) 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, 157730 + ... + 157787.

It is an arithmetic number, because the mean of its divisors is an integer number (2366385).

Almost surely, 2^9149993 is an apocalyptic number.

It is an amenable number.

9149993 is a deficient number, since it is larger than the sum of its proper divisors (315547).

9149993 is a wasteful number, since it uses less digits than its factorization.

9149993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315546.

The product of its digits is 78732, while the sum is 44.

The square root of 9149993 is about 3024.8955353863. The cubic root of 9149993 is about 209.1575698722.

The spelling of 9149993 in words is "nine million, one hundred forty-nine thousand, nine hundred ninety-three".