10508409 has 12 divisors (see below), whose sum is σ = 15428452. Its totient is φ = 6890400.

The previous prime is 10508359. The next prime is 10508461. The reversal of 10508409 is 90480501.

It can be written as a sum of positive squares in 2 ways, for example, as 2471184 + 8037225 = 1572^2 + 2835^2 .

It is not a de Polignac number, because 10508409 - 2⁸ = 10508153 is a prime.

It is a super-2 number, since 2×10508409² = 220853319422562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10508479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9022 + ... + 10119.

Almost surely, 2^10508409 is an apocalyptic number.

It is an amenable number.

10508409 is a deficient number, since it is larger than the sum of its proper divisors (4920043).

10508409 is a wasteful number, since it uses less digits than its factorization.

10508409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19208 (or 19205 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 10508409 is about 3241.6676263923. The cubic root of 10508409 is about 219.0343975494.

The spelling of 10508409 in words is "ten million, five hundred eight thousand, four hundred nine".