3764921 has 4 divisors (see below), whose sum is σ = 3769344. Its totient is φ = 3760500.

The previous prime is 3764911. The next prime is 3764923. The reversal of 3764921 is 1294673.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1294673 = 131 ⋅9883.

It is a cyclic number.

It is not a de Polignac number, because 3764921 - 2¹⁰ = 3763897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3764923) 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, 485 + ... + 2786.

It is an arithmetic number, because the mean of its divisors is an integer number (942336).

Almost surely, 2^3764921 is an apocalyptic number.

It is an amenable number.

3764921 is a deficient number, since it is larger than the sum of its proper divisors (4423).

3764921 is a wasteful number, since it uses less digits than its factorization.

3764921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422.

The product of its digits is 9072, while the sum is 32.

The square root of 3764921 is about 1940.3404340476. The cubic root of 3764921 is about 155.5674104533.

The spelling of 3764921 in words is "three million, seven hundred sixty-four thousand, nine hundred twenty-one".