10290509 has 4 divisors (see below), whose sum is σ = 10509504. Its totient is φ = 10071516.

The previous prime is 10290493. The next prime is 10290523. The reversal of 10290509 is 90509201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10290509 - 2⁴ = 10290493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10290529) 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, 109427 + ... + 109520.

It is an arithmetic number, because the mean of its divisors is an integer number (2627376).

Almost surely, 2^10290509 is an apocalyptic number.

It is an amenable number.

10290509 is a deficient number, since it is larger than the sum of its proper divisors (218995).

10290509 is an equidigital number, since it uses as much as digits as its factorization.

10290509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218994.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 10290509 is about 3207.8823232781. The cubic root of 10290509 is about 217.5098617099.

The spelling of 10290509 in words is "ten million, two hundred ninety thousand, five hundred nine".