26889797 has 4 divisors (see below), whose sum is σ = 29334336. Its totient is φ = 24445260.

The previous prime is 26889791. The next prime is 26889799. The reversal of 26889797 is 79798862.

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 26889797 - 2¹⁰ = 26888773 is a prime.

It is a super-2 number, since 2×26889797² = 1446122365402418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26889791) 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, 1222253 + ... + 1222274.

It is an arithmetic number, because the mean of its divisors is an integer number (7333584).

Almost surely, 2^26889797 is an apocalyptic number.

It is an amenable number.

26889797 is a deficient number, since it is larger than the sum of its proper divisors (2444539).

26889797 is a wasteful number, since it uses less digits than its factorization.

26889797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444538.

The product of its digits is 3048192, while the sum is 56.

The square root of 26889797 is about 5185.5372913518. The cubic root of 26889797 is about 299.5912841648.

The spelling of 26889797 in words is "twenty-six million, eight hundred eighty-nine thousand, seven hundred ninety-seven".