845694394 has 12 divisors (see below), whose sum is σ = 1292936526. Its totient is φ = 414866192.

The previous prime is 845694391. The next prime is 845694401. The reversal of 845694394 is 493496548.

It can be written as a sum of positive squares in 3 ways, for example, as 841754169 + 3940225 = 29013^2 + 1985^2 .

It is not an unprimeable number, because it can be changed into a prime (845694391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69649 + ... + 80884.

Almost surely, 2^845694394 is an apocalyptic number.

845694394 is a deficient number, since it is larger than the sum of its proper divisors (447242132).

845694394 is a wasteful number, since it uses less digits than its factorization.

845694394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150641 (or 150588 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The square root of 845694394 is about 29080.8251946192. The cubic root of 845694394 is about 945.6660921681. Note that the first 3 decimals are identical.

The spelling of 845694394 in words is "eight hundred forty-five million, six hundred ninety-four thousand, three hundred ninety-four".