3735921 has 16 divisors (see below), whose sum is σ = 5773184. Its totient is φ = 2104704.

The previous prime is 3735911. The next prime is 3735923. The reversal of 3735921 is 1295373.

It is not a de Polignac number, because 3735921 - 2⁶ = 3735857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3735923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (360824).

Almost surely, 2^3735921 is an apocalyptic number.

It is an amenable number.

3735921 is a deficient number, since it is larger than the sum of its proper divisors (2037263).

3735921 is a wasteful number, since it uses less digits than its factorization.

3735921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520.

The product of its digits is 5670, while the sum is 30.

The square root of 3735921 is about 1932.8530725329. The cubic root of 3735921 is about 155.1669515710.

It can be divided in two parts, 3735 and 921, that added together give a triangular number (4656 = T₉₆).

The spelling of 3735921 in words is "three million, seven hundred thirty-five thousand, nine hundred twenty-one".