26990459 has 2 divisors, whose sum is σ = 26990460. Its totient is φ = 26990458.

The previous prime is 26990413. The next prime is 26990531. The reversal of 26990459 is 95409962.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26990459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26990059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13495229 + 13495230.

It is an arithmetic number, because the mean of its divisors is an integer number (13495230).

Almost surely, 2^26990459 is an apocalyptic number.

26990459 is a deficient number, since it is larger than the sum of its proper divisors (1).

26990459 is an equidigital number, since it uses as much as digits as its factorization.

26990459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 26990459 is about 5195.2342584334. The cubic root of 26990459 is about 299.9646587998.

The spelling of 26990459 in words is "twenty-six million, nine hundred ninety thousand, four hundred fifty-nine".