10138489 has 2 divisors, whose sum is σ = 10138490. Its totient is φ = 10138488.

The previous prime is 10138463. The next prime is 10138523. The reversal of 10138489 is 98483101.

It is a happy number.

It is an a-pointer prime, because the next prime (10138523) can be obtained adding 10138489 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 1138489 = 3000^2 + 1067^2 .

It is a cyclic number.

It is not a de Polignac number, because 10138489 - 2¹³ = 10130297 is a prime.

It is not a weakly prime, because it can be changed into another prime (10138789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5069244 + 5069245.

It is an arithmetic number, because the mean of its divisors is an integer number (5069245).

Almost surely, 2^10138489 is an apocalyptic number.

It is an amenable number.

10138489 is a deficient number, since it is larger than the sum of its proper divisors (1).

10138489 is an equidigital number, since it uses as much as digits as its factorization.

10138489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 10138489 is about 3184.0994017147. The cubic root of 10138489 is about 216.4334645409.

The spelling of 10138489 in words is "ten million, one hundred thirty-eight thousand, four hundred eighty-nine".