13478397 has 16 divisors (see below), whose sum is σ = 19057152. Its totient is φ = 8458560.

The previous prime is 13478389. The next prime is 13478401. The reversal of 13478397 is 79387431.

It is not a de Polignac number, because 13478397 - 2³ = 13478389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13478317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1483 + ... + 5399.

It is an arithmetic number, because the mean of its divisors is an integer number (1191072).

Almost surely, 2^13478397 is an apocalyptic number.

It is an amenable number.

13478397 is a deficient number, since it is larger than the sum of its proper divisors (5578755).

13478397 is a wasteful number, since it uses less digits than its factorization.

13478397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988.

The product of its digits is 127008, while the sum is 42.

The square root of 13478397 is about 3671.2936412115. The cubic root of 13478397 is about 237.9830802651.

The spelling of 13478397 in words is "thirteen million, four hundred seventy-eight thousand, three hundred ninety-seven".