4040731 has 8 divisors (see below), whose sum is σ = 4161600. Its totient is φ = 3921408.

The previous prime is 4040723. The next prime is 4040737. The reversal of 4040731 is 1370404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4040731 - 2³ = 4040723 is a prime.

It is a super-2 number, since 2×4040731² = 32655014028722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4040699 and 4040708.

It is not an unprimeable number, because it can be changed into a prime (4040737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6715 + ... + 7291.

It is an arithmetic number, because the mean of its divisors is an integer number (520200).

Almost surely, 2^4040731 is an apocalyptic number.

4040731 is a deficient number, since it is larger than the sum of its proper divisors (120869).

4040731 is a wasteful number, since it uses less digits than its factorization.

4040731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 4040731 is about 2010.1569590457. The cubic root of 4040731 is about 159.2770902409.

The spelling of 4040731 in words is "four million, forty thousand, seven hundred thirty-one".