247043394 has 24 divisors (see below), whose sum is σ = 576435132. Its totient is φ = 76013280.

The previous prime is 247043369. The next prime is 247043429. The reversal of 247043394 is 493340742.

247043394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 187553025 + 59490369 = 13695^2 + 7713^2 .

It is a super-2 number, since 2×247043394² = 122060877038078472, which contains 22 as substring.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 527637 + ... + 528104.

Almost surely, 2^247043394 is an apocalyptic number.

247043394 is an abundant number, since it is smaller than the sum of its proper divisors (329391738).

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

247043394 is a wasteful number, since it uses less digits than its factorization.

247043394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055762 (or 1055759 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 247043394 is about 15717.6141319222. The cubic root of 247043394 is about 627.4672768024.

The spelling of 247043394 in words is "two hundred forty-seven million, forty-three thousand, three hundred ninety-four".