823070394 has 12 divisors (see below), whose sum is σ = 1783319226. Its totient is φ = 274356792.

The previous prime is 823070389. The next prime is 823070399. The reversal of 823070394 is 493070328.

823070394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (823070389) and next prime (823070399).

It can be written as a sum of positive squares in only one way, i.e., 716258169 + 106812225 = 26763^2 + 10335^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (823070399) 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, 22863049 + ... + 22863084.

Almost surely, 2^823070394 is an apocalyptic number.

823070394 is an abundant number, since it is smaller than the sum of its proper divisors (960248832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823070394 is a wasteful number, since it uses less digits than its factorization.

823070394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45726141 (or 45726138 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 823070394 is about 28689.2034396217. The cubic root of 823070394 is about 937.1569424276.

The spelling of 823070394 in words is "eight hundred twenty-three million, seventy thousand, three hundred ninety-four".