3909628 has 6 divisors (see below), whose sum is σ = 6841856. Its totient is φ = 1954812.

The previous prime is 3909617. The next prime is 3909641. The reversal of 3909628 is 8269093.

It is a super-3 number, since 3×3909628³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488700 + ... + 488707.

Almost surely, 2^3909628 is an apocalyptic number.

It is an amenable number.

3909628 is a deficient number, since it is larger than the sum of its proper divisors (2932228).

3909628 is a wasteful number, since it uses less digits than its factorization.

3909628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977411 (or 977409 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 3909628 is about 1977.2779268479. The cubic root of 3909628 is about 157.5355156323.

The spelling of 3909628 in words is "three million, nine hundred nine thousand, six hundred twenty-eight".