994417691 has 4 divisors (see below), whose sum is σ = 994489392. Its totient is φ = 994345992.

The previous prime is 994417663. The next prime is 994417709. The reversal of 994417691 is 196714499.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 196714499 = 31 ⋅6345629.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994417691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994417621) 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, 7655 + ... + 45248.

It is an arithmetic number, because the mean of its divisors is an integer number (248622348).

Almost surely, 2^994417691 is an apocalyptic number.

994417691 is a deficient number, since it is larger than the sum of its proper divisors (71701).

994417691 is a wasteful number, since it uses less digits than its factorization.

994417691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71700.

The product of its digits is 489888, while the sum is 50.

The square root of 994417691 is about 31534.3890221453. The cubic root of 994417691 is about 998.1357570914.

The spelling of 994417691 in words is "nine hundred ninety-four million, four hundred seventeen thousand, six hundred ninety-one".