906438771 has 24 divisors (see below), whose sum is σ = 1521711360. Its totient is φ = 509183856.

The previous prime is 906438749. The next prime is 906438781. The reversal of 906438771 is 177834609.

It is not a de Polignac number, because 906438771 - 2⁵ = 906438739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (906438721) 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, 118215 + ... + 125648.

It is an arithmetic number, because the mean of its divisors is an integer number (63404640).

Almost surely, 2^906438771 is an apocalyptic number.

906438771 is a deficient number, since it is larger than the sum of its proper divisors (615272589).

906438771 is a wasteful number, since it uses less digits than its factorization.

906438771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243935 (or 243932 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 906438771 is about 30107.1215993824. The cubic root of 906438771 is about 967.7863471477.

The spelling of 906438771 in words is "nine hundred six million, four hundred thirty-eight thousand, seven hundred seventy-one".