26929421 has 4 divisors (see below), whose sum is σ = 27798144. Its totient is φ = 26060700.

The previous prime is 26929417. The next prime is 26929423. The reversal of 26929421 is 12492962.

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 26929421 - 2² = 26929417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26929423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434315 + ... + 434376.

It is an arithmetic number, because the mean of its divisors is an integer number (6949536).

Almost surely, 2^26929421 is an apocalyptic number.

It is an amenable number.

26929421 is a deficient number, since it is larger than the sum of its proper divisors (868723).

26929421 is an equidigital number, since it uses as much as digits as its factorization.

26929421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868722.

The product of its digits is 15552, while the sum is 35.

The square root of 26929421 is about 5189.3565111678. The cubic root of 26929421 is about 299.7383681919.

The spelling of 26929421 in words is "twenty-six million, nine hundred twenty-nine thousand, four hundred twenty-one".