906189331 has 4 divisors (see below), whose sum is σ = 906281200. Its totient is φ = 906097464.

The previous prime is 906189299. The next prime is 906189341. The reversal of 906189331 is 133981609.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 133981609 = 6529 ⋅20521.

It is a cyclic number.

It is not a de Polignac number, because 906189331 - 2⁵ = 906189299 is a prime.

It is a super-2 number, since 2×906189331² = 1642358207236455122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906189341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29076 + ... + 51553.

It is an arithmetic number, because the mean of its divisors is an integer number (226570300).

Almost surely, 2^906189331 is an apocalyptic number.

906189331 is a deficient number, since it is larger than the sum of its proper divisors (91869).

906189331 is a wasteful number, since it uses less digits than its factorization.

906189331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91868.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 906189331 is about 30102.9787728723. The cubic root of 906189331 is about 967.6975649886.

The spelling of 906189331 in words is "nine hundred six million, one hundred eighty-nine thousand, three hundred thirty-one".