13798405 has 8 divisors (see below), whose sum is σ = 16578072. Its totient is φ = 11025408.

The previous prime is 13798381. The next prime is 13798409. The reversal of 13798405 is 50489731.

It can be written as a sum of positive squares in 4 ways, for example, as 123201 + 13675204 = 351^2 + 3698^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13798405 - 2⁷ = 13798277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13798409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6877 + ... + 8653.

It is an arithmetic number, because the mean of its divisors is an integer number (2072259).

Almost surely, 2^13798405 is an apocalyptic number.

It is an amenable number.

13798405 is a deficient number, since it is larger than the sum of its proper divisors (2779667).

13798405 is a wasteful number, since it uses less digits than its factorization.

13798405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 13798405 is about 3714.6204382144. The cubic root of 13798405 is about 239.8517892791.

The spelling of 13798405 in words is "thirteen million, seven hundred ninety-eight thousand, four hundred five".