9941409 has 9 divisors (see below), whose sum is σ = 14373489. Its totient is φ = 6621300.

The previous prime is 9941383. The next prime is 9941431. The reversal of 9941409 is 9041499.

The square root of 9941409 is 3153.

It is a perfect power (a square), and thus also a powerful number.

9941409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 9941409 - 2¹⁷ = 9810337 is a prime.

It is a super-2 number, since 2×9941409² = 197663225810562, which contains 22 as substring.

9941409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9941479) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8934 + ... + 9984.

Almost surely, 2^9941409 is an apocalyptic number.

9941409 is the 3153-rd square number.

9941409 is the 1577-th centered octagonal number.

It is an amenable number.

9941409 is a deficient number, since it is larger than the sum of its proper divisors (4432080).

9941409 is an equidigital number, since it uses as much as digits as its factorization.

9941409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The cubic root of 9941409 is about 215.0218762669.

Multiplying 9941409 by its sum of digits (36), we get a square (357890724 = 18918²).

Multiplying 9941409 by its product of nonzero digits (11664), we get a square (115956594576 = 340524²).

The spelling of 9941409 in words is "nine million, nine hundred forty-one thousand, four hundred nine".