13453897 has 4 divisors (see below), whose sum is σ = 13486276. Its totient is φ = 13421520.

The previous prime is 13453879. The next prime is 13453901. The reversal of 13453897 is 79835431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4145296 + 9308601 = 2036^2 + 3051^2 .

It is a cyclic number.

It is not a de Polignac number, because 13453897 - 2¹⁵ = 13421129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13453807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15558 + ... + 16399.

It is an arithmetic number, because the mean of its divisors is an integer number (3371569).

Almost surely, 2^13453897 is an apocalyptic number.

It is an amenable number.

13453897 is a deficient number, since it is larger than the sum of its proper divisors (32379).

13453897 is an equidigital number, since it uses as much as digits as its factorization.

13453897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32378.

The product of its digits is 90720, while the sum is 40.

The square root of 13453897 is about 3667.9554250290. The cubic root of 13453897 is about 237.8387969887.

The spelling of 13453897 in words is "thirteen million, four hundred fifty-three thousand, eight hundred ninety-seven".