26149921 has 8 divisors (see below), whose sum is σ = 30392640. Its totient is φ = 22033968.

The previous prime is 26149901. The next prime is 26149951. The reversal of 26149921 is 12994162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26149921 - 2⁵ = 26149889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26149901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31246 + ... + 32071.

It is an arithmetic number, because the mean of its divisors is an integer number (3799080).

Almost surely, 2^26149921 is an apocalyptic number.

It is an amenable number.

26149921 is a deficient number, since it is larger than the sum of its proper divisors (4242719).

26149921 is an equidigital number, since it uses as much as digits as its factorization.

26149921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63383.

The product of its digits is 7776, while the sum is 34.

The square root of 26149921 is about 5113.6993458748. The cubic root of 26149921 is about 296.8179266241.

The spelling of 26149921 in words is "twenty-six million, one hundred forty-nine thousand, nine hundred twenty-one".