409697449 has 8 divisors (see below), whose sum is σ = 478188288. Its totient is φ = 343697280.

The previous prime is 409697443. The next prime is 409697479. The reversal of 409697449 is 944796904.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 409697449 - 2¹³ = 409689257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 409697396 and 409697405.

It is not an unprimeable number, because it can be changed into a prime (409697443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622312 + ... + 622969.

It is an arithmetic number, because the mean of its divisors is an integer number (59773536).

Almost surely, 2^409697449 is an apocalyptic number.

It is an amenable number.

409697449 is a deficient number, since it is larger than the sum of its proper divisors (68490839).

409697449 is a wasteful number, since it uses less digits than its factorization.

409697449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245335.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 409697449 is about 20240.9843881171. The cubic root of 409697449 is about 742.7131043057.

The spelling of 409697449 in words is "four hundred nine million, six hundred ninety-seven thousand, four hundred forty-nine".