26880949 has 2 divisors, whose sum is σ = 26880950. Its totient is φ = 26880948.

The previous prime is 26880943. The next prime is 26880979. The reversal of 26880949 is 94908862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25300900 + 1580049 = 5030^2 + 1257^2 .

It is a cyclic number.

It is not a de Polignac number, because 26880949 - 2⁹ = 26880437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26880899 and 26880908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26880943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13440474 + 13440475.

It is an arithmetic number, because the mean of its divisors is an integer number (13440475).

Almost surely, 2^26880949 is an apocalyptic number.

It is an amenable number.

26880949 is a deficient number, since it is larger than the sum of its proper divisors (1).

26880949 is an equidigital number, since it uses as much as digits as its factorization.

26880949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 26880949 is about 5184.6840790930. The cubic root of 26880949 is about 299.5584207151.

The spelling of 26880949 in words is "twenty-six million, eight hundred eighty thousand, nine hundred forty-nine".