993494141 has 4 divisors (see below), whose sum is σ = 1020345372. Its totient is φ = 966642912.

The previous prime is 993494137. The next prime is 993494153. The reversal of 993494141 is 141494399.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141494399 = 151 ⋅937049.

It can be written as a sum of positive squares in 2 ways, for example, as 838392025 + 155102116 = 28955^2 + 12454^2 .

It is a cyclic number.

It is not a de Polignac number, because 993494141 - 2² = 993494137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993494092 and 993494101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993494101) 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, 13425560 + ... + 13425633.

It is an arithmetic number, because the mean of its divisors is an integer number (255086343).

Almost surely, 2^993494141 is an apocalyptic number.

It is an amenable number.

993494141 is a deficient number, since it is larger than the sum of its proper divisors (26851231).

993494141 is a wasteful number, since it uses less digits than its factorization.

993494141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26851230.

The product of its digits is 139968, while the sum is 44.

The square root of 993494141 is about 31519.7420833356. The cubic root of 993494141 is about 997.8266603500.

The spelling of 993494141 in words is "nine hundred ninety-three million, four hundred ninety-four thousand, one hundred forty-one".