900069389 has 2 divisors, whose sum is σ = 900069390. Its totient is φ = 900069388.

The previous prime is 900069383. The next prime is 900069397. The reversal of 900069389 is 983960009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 705327364 + 194742025 = 26558^2 + 13955^2 .

It is a cyclic number.

It is not a de Polignac number, because 900069389 - 2²⁰ = 899020813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900069383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450034694 + 450034695.

It is an arithmetic number, because the mean of its divisors is an integer number (450034695).

Almost surely, 2^900069389 is an apocalyptic number.

It is an amenable number.

900069389 is a deficient number, since it is larger than the sum of its proper divisors (1).

900069389 is an equidigital number, since it uses as much as digits as its factorization.

900069389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 900069389 is about 30001.1564610433. The cubic root of 900069389 is about 965.5141966876.

The spelling of 900069389 in words is "nine hundred million, sixty-nine thousand, three hundred eighty-nine".