3649408 has 32 divisors (see below), whose sum is σ = 8310960. Its totient is φ = 1563648.

The previous prime is 3649403. The next prime is 3649411. The reversal of 3649408 is 8049463.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649403) 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, 1141 + ... + 2932.

Almost surely, 2^3649408 is an apocalyptic number.

It is an amenable number.

3649408 is an abundant number, since it is smaller than the sum of its proper divisors (4661552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3649408 is an equidigital number, since it uses as much as digits as its factorization.

3649408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094 (or 4082 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 3649408 is about 1910.3423776904. The cubic root of 3649408 is about 153.9598478556.

The spelling of 3649408 in words is "three million, six hundred forty-nine thousand, four hundred eight".