3914905 has 4 divisors (see below), whose sum is σ = 4697892. Its totient is φ = 3131920.

The previous prime is 3914903. The next prime is 3914921. The reversal of 3914905 is 5094193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5094193 = 13 ⋅391861.

It can be written as a sum of positive squares in 2 ways, for example, as 451584 + 3463321 = 672^2 + 1861^2 .

It is not a de Polignac number, because 3914905 - 2¹ = 3914903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3914903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391486 + ... + 391495.

It is an arithmetic number, because the mean of its divisors is an integer number (1174473).

Almost surely, 2^3914905 is an apocalyptic number.

It is an amenable number.

3914905 is a deficient number, since it is larger than the sum of its proper divisors (782987).

3914905 is an equidigital number, since it uses as much as digits as its factorization.

3914905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782986.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 3914905 is about 1978.6118871573. The cubic root of 3914905 is about 157.6063613475.

The spelling of 3914905 in words is "three million, nine hundred fourteen thousand, nine hundred five".