3940145 has 16 divisors (see below), whose sum is σ = 5235840. Its totient is φ = 2822400.

The previous prime is 3940127. The next prime is 3940147. The reversal of 3940145 is 5410493.

It is not a de Polignac number, because 3940145 - 2¹⁴ = 3923761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3940147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3401 + ... + 4409.

It is an arithmetic number, because the mean of its divisors is an integer number (327240).

Almost surely, 2^3940145 is an apocalyptic number.

It is an amenable number.

3940145 is a deficient number, since it is larger than the sum of its proper divisors (1295695).

3940145 is a wasteful number, since it uses less digits than its factorization.

3940145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 3940145 is about 1984.9798487642. The cubic root of 3940145 is about 157.9443402729.

The spelling of 3940145 in words is "three million, nine hundred forty thousand, one hundred forty-five".