26649379 has 4 divisors (see below), whose sum is σ = 27269176. Its totient is φ = 26029584.

The previous prime is 26649331. The next prime is 26649383. The reversal of 26649379 is 97394662.

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 26649379 - 2¹³ = 26641187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26640379) 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, 309834 + ... + 309919.

It is an arithmetic number, because the mean of its divisors is an integer number (6817294).

Almost surely, 2^26649379 is an apocalyptic number.

26649379 is a deficient number, since it is larger than the sum of its proper divisors (619797).

26649379 is an equidigital number, since it uses as much as digits as its factorization.

26649379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619796.

The product of its digits is 489888, while the sum is 46.

The square root of 26649379 is about 5162.3036524404. The cubic root of 26649379 is about 298.6957416212.

It can be divided in two parts, 26649 and 379, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 26649379 in words is "twenty-six million, six hundred forty-nine thousand, three hundred seventy-nine".