994478249 has 4 divisors (see below), whose sum is σ = 995137920. Its totient is φ = 993818580.

The previous prime is 994478239. The next prime is 994478279. The reversal of 994478249 is 942874499.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994478249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 994478194 and 994478203.

It is not an unprimeable number, because it can be changed into a prime (994478239) 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, 327569 + ... + 330590.

It is an arithmetic number, because the mean of its divisors is an integer number (248784480).

Almost surely, 2^994478249 is an apocalyptic number.

It is an amenable number.

994478249 is a deficient number, since it is larger than the sum of its proper divisors (659671).

994478249 is a wasteful number, since it uses less digits than its factorization.

994478249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659670.

The product of its digits is 5225472, while the sum is 56.

The square root of 994478249 is about 31535.3491973690. The cubic root of 994478249 is about 998.1560181543.

The spelling of 994478249 in words is "nine hundred ninety-four million, four hundred seventy-eight thousand, two hundred forty-nine".