906146389 has 2 divisors, whose sum is σ = 906146390. Its totient is φ = 906146388.

The previous prime is 906146377. The next prime is 906146413. The reversal of 906146389 is 983641609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 841986289 + 64160100 = 29017^2 + 8010^2 .

It is a cyclic number.

It is not a de Polignac number, because 906146389 - 2⁵ = 906146357 is a prime.

It is a super-2 number, since 2×906146389² = 1642202556595478642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (906143389) 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 as a sum of consecutive naturals, namely, 453073194 + 453073195.

It is an arithmetic number, because the mean of its divisors is an integer number (453073195).

Almost surely, 2^906146389 is an apocalyptic number.

It is an amenable number.

906146389 is a deficient number, since it is larger than the sum of its proper divisors (1).

906146389 is an equidigital number, since it uses as much as digits as its factorization.

906146389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 906146389 is about 30102.2655127484. The cubic root of 906146389 is about 967.6822791744.

The spelling of 906146389 in words is "nine hundred six million, one hundred forty-six thousand, three hundred eighty-nine".