994397845 has 16 divisors (see below), whose sum is σ = 1365130368. Its totient is φ = 681180480.

The previous prime is 994397843. The next prime is 994397861. The reversal of 994397845 is 548793499.

It is not a de Polignac number, because 994397845 - 2¹ = 994397843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994397845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994397843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21822 + ... + 49648.

It is an arithmetic number, because the mean of its divisors is an integer number (85320648).

Almost surely, 2^994397845 is an apocalyptic number.

It is an amenable number.

994397845 is a deficient number, since it is larger than the sum of its proper divisors (370732523).

994397845 is a wasteful number, since it uses less digits than its factorization.

994397845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28860.

The product of its digits is 9797760, while the sum is 58.

The square root of 994397845 is about 31534.0743482348. The cubic root of 994397845 is about 998.1291169795.

The spelling of 994397845 in words is "nine hundred ninety-four million, three hundred ninety-seven thousand, eight hundred forty-five".