10387409 has 4 divisors (see below), whose sum is σ = 10444980. Its totient is φ = 10329840.

The previous prime is 10387397. The next prime is 10387427. The reversal of 10387409 is 90478301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90478301 = 17 ⋅5322253.

It can be written as a sum of positive squares in 2 ways, for example, as 2879809 + 7507600 = 1697^2 + 2740^2 .

It is a cyclic number.

It is not a de Polignac number, because 10387409 - 2¹² = 10383313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10387469) 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, 28514 + ... + 28875.

It is an arithmetic number, because the mean of its divisors is an integer number (2611245).

Almost surely, 2^10387409 is an apocalyptic number.

It is an amenable number.

10387409 is a deficient number, since it is larger than the sum of its proper divisors (57571).

10387409 is an equidigital number, since it uses as much as digits as its factorization.

10387409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57570.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 10387409 is about 3222.9503564281. The cubic root of 10387409 is about 218.1904530410.

The spelling of 10387409 in words is "ten million, three hundred eighty-seven thousand, four hundred nine".