26990413 has 2 divisors, whose sum is σ = 26990414. Its totient is φ = 26990412.

The previous prime is 26990399. The next prime is 26990459. The reversal of 26990413 is 31409962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 6215049 = 4558^2 + 2493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26990413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26990813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13495206 + 13495207.

It is an arithmetic number, because the mean of its divisors is an integer number (13495207).

Almost surely, 2^26990413 is an apocalyptic number.

It is an amenable number.

26990413 is a deficient number, since it is larger than the sum of its proper divisors (1).

26990413 is an equidigital number, since it uses as much as digits as its factorization.

26990413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 26990413 is about 5195.2298312972. The cubic root of 26990413 is about 299.9644883892.

The spelling of 26990413 in words is "twenty-six million, nine hundred ninety thousand, four hundred thirteen".