994454547841 has 4 divisors (see below), whose sum is σ = 994468494784. Its totient is φ = 994440600900.

The previous prime is 994454547839. The next prime is 994454547851. The reversal of 994454547841 is 148745454499.

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, and also an emirpimes, since its reverse is a distinct semiprime: 148745454499 = 28571 ⋅5206169.

It is a cyclic number.

It is not a de Polignac number, because 994454547841 - 2¹ = 994454547839 is a prime.

It is a super-2 number, since 2×994454547841² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994454547851) 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, 6865965 + ... + 7009306.

It is an arithmetic number, because the mean of its divisors is an integer number (248617123696).

Almost surely, 2^994454547841 is an apocalyptic number.

It is an amenable number.

994454547841 is a deficient number, since it is larger than the sum of its proper divisors (13946943).

994454547841 is a wasteful number, since it uses less digits than its factorization.

994454547841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13946942.

The product of its digits is 116121600, while the sum is 64.

The spelling of 994454547841 in words is "nine hundred ninety-four billion, four hundred fifty-four million, five hundred forty-seven thousand, eight hundred forty-one".