26405961 has 4 divisors (see below), whose sum is σ = 35207952. Its totient is φ = 17603972.

The previous prime is 26405959. The next prime is 26405971. The reversal of 26405961 is 16950462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26405961 - 2¹ = 26405959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26405971) 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, 4400991 + ... + 4400996.

It is an arithmetic number, because the mean of its divisors is an integer number (8801988).

Almost surely, 2^26405961 is an apocalyptic number.

It is an amenable number.

26405961 is a deficient number, since it is larger than the sum of its proper divisors (8801991).

26405961 is an equidigital number, since it uses as much as digits as its factorization.

26405961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8801990.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 26405961 is about 5138.6730777507. The cubic root of 26405961 is about 297.7835199393.

The spelling of 26405961 in words is "twenty-six million, four hundred five thousand, nine hundred sixty-one".