3785978 has 32 divisors (see below), whose sum is σ = 7011840. Its totient is φ = 1496880.

The previous prime is 3785963. The next prime is 3785987. The reversal of 3785978 is 8795873.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11273 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (219120).

Almost surely, 2^3785978 is an apocalyptic number.

3785978 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3785978 is a deficient number, since it is larger than the sum of its proper divisors (3225862).

3785978 is a wasteful number, since it uses less digits than its factorization.

3785978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402.

The product of its digits is 423360, while the sum is 47.

The square root of 3785978 is about 1945.7589778798. The cubic root of 3785978 is about 155.8568981366.

The spelling of 3785978 in words is "three million, seven hundred eighty-five thousand, nine hundred seventy-eight".