26979481 has 2 divisors, whose sum is σ = 26979482. Its totient is φ = 26979480.

The previous prime is 26979451. The next prime is 26979497. The reversal of 26979481 is 18497962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26873856 + 105625 = 5184^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 26979481 - 2¹³ = 26971289 is a prime.

It is a super-2 number, since 2×26979481² = 1455784790058722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26979431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13489740 + 13489741.

It is an arithmetic number, because the mean of its divisors is an integer number (13489741).

Almost surely, 2^26979481 is an apocalyptic number.

It is an amenable number.

26979481 is a deficient number, since it is larger than the sum of its proper divisors (1).

26979481 is an equidigital number, since it uses as much as digits as its factorization.

26979481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 26979481 is about 5194.1776057428. The cubic root of 26979481 is about 299.9239844441.

The spelling of 26979481 in words is "twenty-six million, nine hundred seventy-nine thousand, four hundred eighty-one".