906213239 has 4 divisors (see below), whose sum is σ = 923311656. Its totient is φ = 889114824.

The previous prime is 906213229. The next prime is 906213293. The reversal of 906213239 is 932312609.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 906213239 - 2⁴ = 906213223 is a prime.

It is a super-2 number, since 2×906213239² = 1642444869077742242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 906213199 and 906213208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906213229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8549129 + ... + 8549234.

It is an arithmetic number, because the mean of its divisors is an integer number (230827914).

Almost surely, 2^906213239 is an apocalyptic number.

906213239 is a deficient number, since it is larger than the sum of its proper divisors (17098417).

906213239 is a wasteful number, since it uses less digits than its factorization.

906213239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17098416.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 906213239 is about 30103.3758738119. The cubic root of 906213239 is about 967.7060751712.

The spelling of 906213239 in words is "nine hundred six million, two hundred thirteen thousand, two hundred thirty-nine".