993122149 has 4 divisors (see below), whose sum is σ = 1006726636. Its totient is φ = 979517664.

The previous prime is 993122087. The next prime is 993122159. The reversal of 993122149 is 941221399.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941221399 = 61 ⋅15429859.

It can be written as a sum of positive squares in 2 ways, for example, as 817559649 + 175562500 = 28593^2 + 13250^2 .

It is a cyclic number.

It is not a de Polignac number, because 993122149 - 2¹⁹ = 992597861 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 (993122159) 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, 6802134 + ... + 6802279.

It is an arithmetic number, because the mean of its divisors is an integer number (251681659).

Almost surely, 2^993122149 is an apocalyptic number.

It is an amenable number.

993122149 is a deficient number, since it is larger than the sum of its proper divisors (13604487).

993122149 is a wasteful number, since it uses less digits than its factorization.

993122149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13604486.

The product of its digits is 34992, while the sum is 40.

The square root of 993122149 is about 31513.8405942532. The cubic root of 993122149 is about 997.7021067311.

The spelling of 993122149 in words is "nine hundred ninety-three million, one hundred twenty-two thousand, one hundred forty-nine".