3734921 has 4 divisors (see below), whose sum is σ = 3741972. Its totient is φ = 3727872.

The previous prime is 3734909. The next prime is 3734953. The reversal of 3734921 is 1294373.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1294373 = 67 ⋅19319.

It can be written as a sum of positive squares in 2 ways, for example, as 2524921 + 1210000 = 1589^2 + 1100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3734921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3734821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2660 + ... + 3813.

It is an arithmetic number, because the mean of its divisors is an integer number (935493).

Almost surely, 2^3734921 is an apocalyptic number.

It is an amenable number.

3734921 is a deficient number, since it is larger than the sum of its proper divisors (7051).

3734921 is an equidigital number, since it uses as much as digits as its factorization.

3734921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7050.

The product of its digits is 4536, while the sum is 29.

The square root of 3734921 is about 1932.5943702702. The cubic root of 3734921 is about 155.1531057395.

The spelling of 3734921 in words is "three million, seven hundred thirty-four thousand, nine hundred twenty-one".