26470139 has 4 divisors (see below), whose sum is σ = 28027224. Its totient is φ = 24913056.

The previous prime is 26470099. The next prime is 26470141. The reversal of 26470139 is 93107462.

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 26470139 - 2¹⁶ = 26404603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26470189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778517 + ... + 778550.

It is an arithmetic number, because the mean of its divisors is an integer number (7006806).

Almost surely, 2^26470139 is an apocalyptic number.

26470139 is a deficient number, since it is larger than the sum of its proper divisors (1557085).

26470139 is a wasteful number, since it uses less digits than its factorization.

26470139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557084.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 26470139 is about 5144.9138962669. The cubic root of 26470139 is about 298.0245726926.

The spelling of 26470139 in words is "twenty-six million, four hundred seventy thousand, one hundred thirty-nine".