3649404 has 24 divisors (see below), whose sum is σ = 9289728. Its totient is φ = 1105840.

The previous prime is 3649403. The next prime is 3649411. The reversal of 3649404 is 4049463.

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 7 ways as a sum of consecutive naturals, for example, 13692 + ... + 13955.

It is an arithmetic number, because the mean of its divisors is an integer number (387072).

Almost surely, 2^3649404 is an apocalyptic number.

It is an amenable number.

3649404 is an abundant number, since it is smaller than the sum of its proper divisors (5640324).

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

3649404 is a wasteful number, since it uses less digits than its factorization.

3649404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27665 (or 27663 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 3649404 is about 1910.3413307574. The cubic root of 3649404 is about 153.9597916054.

The spelling of 3649404 in words is "three million, six hundred forty-nine thousand, four hundred four".