26198039 has 4 divisors (see below), whose sum is σ = 29940624. Its totient is φ = 22455456.

The previous prime is 26198027. The next prime is 26198063. The reversal of 26198039 is 93089162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26198039 - 2⁸ = 26197783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26197993 and 26198011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26198089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871282 + ... + 1871295.

It is an arithmetic number, because the mean of its divisors is an integer number (7485156).

Almost surely, 2^26198039 is an apocalyptic number.

26198039 is a deficient number, since it is larger than the sum of its proper divisors (3742585).

26198039 is an equidigital number, since it uses as much as digits as its factorization.

26198039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742584.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 26198039 is about 5118.4019967173. The cubic root of 26198039 is about 296.9998715172. Note that the first 3 decimals are identical.

The spelling of 26198039 in words is "twenty-six million, one hundred ninety-eight thousand, thirty-nine".