3783945 has 64 divisors (see below), whose sum is σ = 7464960. Its totient is φ = 1612800.

The previous prime is 3783943. The next prime is 3783961. The reversal of 3783945 is 5493873.

3783945 = T₁₁₉ + T₁₂₀ + ... + T₂₈₉.

It is not a de Polignac number, because 3783945 - 2¹ = 3783943 is a prime.

Its product of digits (90720) is a multiple of the sum of its prime divisors (126).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3783943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53260 + ... + 53330.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

Almost surely, 2^3783945 is an apocalyptic number.

It is an amenable number.

3783945 is a deficient number, since it is larger than the sum of its proper divisors (3681015).

3783945 is a wasteful number, since it uses less digits than its factorization.

3783945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126.

The product of its digits is 90720, while the sum is 39.

The square root of 3783945 is about 1945.2364894788. The cubic root of 3783945 is about 155.8289957200.

The spelling of 3783945 in words is "three million, seven hundred eighty-three thousand, nine hundred forty-five".