4040493 has 4 divisors (see below), whose sum is σ = 5387328. Its totient is φ = 2693660.

The previous prime is 4040473. The next prime is 4040501. The reversal of 4040493 is 3940404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4040493 - 2⁵ = 4040461 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040473) 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, 673413 + ... + 673418.

It is an arithmetic number, because the mean of its divisors is an integer number (1346832).

Almost surely, 2^4040493 is an apocalyptic number.

It is an amenable number.

4040493 is a deficient number, since it is larger than the sum of its proper divisors (1346835).

4040493 is a wasteful number, since it uses less digits than its factorization.

4040493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346834.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4040493 is about 2010.0977588167. The cubic root of 4040493 is about 159.2739630269.

Adding to 4040493 its reverse (3940404), we get a palindrome (7980897).

The spelling of 4040493 in words is "four million, forty thousand, four hundred ninety-three".