842772393 has 24 divisors (see below), whose sum is σ = 1260717120. Its totient is φ = 541870560.

The previous prime is 842772391. The next prime is 842772397. The reversal of 842772393 is 393277248.

It is not a de Polignac number, because 842772393 - 2¹ = 842772391 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (842772391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464458 + ... + 466268.

It is an arithmetic number, because the mean of its divisors is an integer number (52529880).

Almost surely, 2^842772393 is an apocalyptic number.

It is an amenable number.

842772393 is a deficient number, since it is larger than the sum of its proper divisors (417944727).

842772393 is a wasteful number, since it uses less digits than its factorization.

842772393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629 (or 3626 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 842772393 is about 29030.5424165654. The cubic root of 842772393 is about 944.5756959698.

The spelling of 842772393 in words is "eight hundred forty-two million, seven hundred seventy-two thousand, three hundred ninety-three".