3785421 has 8 divisors (see below), whose sum is σ = 5056480. Its totient is φ = 2518992.

The previous prime is 3785417. The next prime is 3785449. The reversal of 3785421 is 1245873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3785421 - 2² = 3785417 is a prime.

It is a Duffinian number.

3785421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3785401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1935 + ... + 3363.

It is an arithmetic number, because the mean of its divisors is an integer number (632060).

Almost surely, 2^3785421 is an apocalyptic number.

It is an amenable number.

3785421 is a deficient number, since it is larger than the sum of its proper divisors (1271059).

3785421 is a wasteful number, since it uses less digits than its factorization.

3785421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its digits is 6720, while the sum is 30.

The square root of 3785421 is about 1945.6158408072. The cubic root of 3785421 is about 155.8492544446.

It can be divided in two parts, 37 and 85421, that added together give a palindrome (85458).

The spelling of 3785421 in words is "three million, seven hundred eighty-five thousand, four hundred twenty-one".