13772397 has 32 divisors (see below), whose sum is σ = 20891520. Its totient is φ = 8017920.

The previous prime is 13772393. The next prime is 13772411. The reversal of 13772397 is 79327731.

13772397 is nontrivially palindromic in base 7.

13772397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13772397 - 2² = 13772393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13772393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58993 + ... + 59225.

It is an arithmetic number, because the mean of its divisors is an integer number (652860).

Almost surely, 2^13772397 is an apocalyptic number.

13772397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13772397 is a deficient number, since it is larger than the sum of its proper divisors (7119123).

13772397 is a wasteful number, since it uses less digits than its factorization.

13772397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its digits is 55566, while the sum is 39.

The square root of 13772397 is about 3711.1180256090. The cubic root of 13772397 is about 239.7009991763.

The spelling of 13772397 in words is "thirteen million, seven hundred seventy-two thousand, three hundred ninety-seven".