3909546 has 20 divisors (see below), whose sum is σ = 8760642. Its totient is φ = 1303128.

The previous prime is 3909533. The next prime is 3909547. The reversal of 3909546 is 6459093.

It can be written as a sum of positive squares in only one way, i.e., 3404025 + 505521 = 1845^2 + 711^2 .

It is a super-2 number, since 2×3909546² = 30569099852232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3909546.

It is not an unprimeable number, because it can be changed into a prime (3909547) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11905 + ... + 12228.

Almost surely, 2^3909546 is an apocalyptic number.

3909546 is an abundant number, since it is smaller than the sum of its proper divisors (4851096).

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

3909546 is a wasteful number, since it uses less digits than its factorization.

3909546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24147 (or 24138 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 3909546 is about 1977.2571911615. The cubic root of 3909546 is about 157.5344142485.

The spelling of 3909546 in words is "three million, nine hundred nine thousand, five hundred forty-six".