26231489 has 2 divisors, whose sum is σ = 26231490. Its totient is φ = 26231488.

The previous prime is 26231461. The next prime is 26231501. The reversal of 26231489 is 98413262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14500864 + 11730625 = 3808^2 + 3425^2 .

It is a cyclic number.

It is not a de Polignac number, because 26231489 - 2¹² = 26227393 is a prime.

It is not a weakly prime, because it can be changed into another prime (26231389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13115744 + 13115745.

It is an arithmetic number, because the mean of its divisors is an integer number (13115745).

Almost surely, 2^26231489 is an apocalyptic number.

It is an amenable number.

26231489 is a deficient number, since it is larger than the sum of its proper divisors (1).

26231489 is an equidigital number, since it uses as much as digits as its factorization.

26231489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 26231489 is about 5121.6685757671. The cubic root of 26231489 is about 297.1262222016.

The spelling of 26231489 in words is "twenty-six million, two hundred thirty-one thousand, four hundred eighty-nine".