4040618 has 4 divisors (see below), whose sum is σ = 6060930. Its totient is φ = 2020308.

The previous prime is 4040593. The next prime is 4040627. The reversal of 4040618 is 8160404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2845969 + 1194649 = 1687^2 + 1093^2 .

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4040593 and 4040602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010153 + ... + 1010156.

Almost surely, 2^4040618 is an apocalyptic number.

4040618 is a deficient number, since it is larger than the sum of its proper divisors (2020312).

4040618 is a wasteful number, since it uses less digits than its factorization.

4040618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020311.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 4040618 is about 2010.1288515914. The cubic root of 4040618 is about 159.2756054865.

The spelling of 4040618 in words is "four million, forty thousand, six hundred eighteen".