26149797 has 20 divisors (see below), whose sum is σ = 39622176. Its totient is φ = 17183880.

The previous prime is 26149789. The next prime is 26149801. The reversal of 26149797 is 79794162.

It is not a de Polignac number, because 26149797 - 2³ = 26149789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26149397) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3478 + ... + 8024.

Almost surely, 2^26149797 is an apocalyptic number.

26149797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26149797 is a deficient number, since it is larger than the sum of its proper divisors (13472379).

26149797 is an equidigital number, since it uses as much as digits as its factorization.

26149797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630 (or 4621 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 26149797 is about 5113.6872215653. The cubic root of 26149797 is about 296.8174574642.

The spelling of 26149797 in words is "twenty-six million, one hundred forty-nine thousand, seven hundred ninety-seven".