3914945 has 16 divisors (see below), whose sum is σ = 4993920. Its totient is φ = 2939904.

The previous prime is 3914941. The next prime is 3914957. The reversal of 3914945 is 5494193.

It is a cyclic number.

It is not a de Polignac number, because 3914945 - 2² = 3914941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3914941) 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 15 ways as a sum of consecutive naturals, for example, 6497 + ... + 7073.

It is an arithmetic number, because the mean of its divisors is an integer number (312120).

Almost surely, 2^3914945 is an apocalyptic number.

It is an amenable number.

3914945 is a deficient number, since it is larger than the sum of its proper divisors (1078975).

3914945 is a wasteful number, since it uses less digits than its factorization.

3914945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its digits is 19440, while the sum is 35.

The square root of 3914945 is about 1978.6219952280. The cubic root of 3914945 is about 157.6068981194.

The spelling of 3914945 in words is "three million, nine hundred fourteen thousand, nine hundred forty-five".