13787401 has 4 divisors (see below), whose sum is σ = 13806100. Its totient is φ = 13768704.

The previous prime is 13787387. The next prime is 13787429. The reversal of 13787401 is 10478731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10478731 = 23 ⋅455597.

It can be written as a sum of positive squares in 2 ways, for example, as 6497401 + 7290000 = 2549^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 13787401 - 2¹⁹ = 13263113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13787471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8196 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (3451525).

Almost surely, 2^13787401 is an apocalyptic number.

It is an amenable number.

13787401 is a deficient number, since it is larger than the sum of its proper divisors (18699).

13787401 is an equidigital number, since it uses as much as digits as its factorization.

13787401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18698.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 13787401 is about 3713.1389685817. The cubic root of 13787401 is about 239.7880130430.

The spelling of 13787401 in words is "thirteen million, seven hundred eighty-seven thousand, four hundred one".