40040733 has 8 divisors (see below), whose sum is σ = 56197600. Its totient is φ = 25288848.

The previous prime is 40040731. The next prime is 40040753. The reversal of 40040733 is 33704004.

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

It is not a de Polignac number, because 40040733 - 2¹ = 40040731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040731) 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, 351178 + ... + 351291.

It is an arithmetic number, because the mean of its divisors is an integer number (7024700).

Almost surely, 2^40040733 is an apocalyptic number.

It is an amenable number.

40040733 is a deficient number, since it is larger than the sum of its proper divisors (16156867).

40040733 is a wasteful number, since it uses less digits than its factorization.

40040733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702491.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 40040733 is about 6327.7747273429. The cubic root of 40040733 is about 342.1112373698. Note that the first 3 decimals are identical.

Adding to 40040733 its reverse (33704004), we get a palindrome (73744737).

The spelling of 40040733 in words is "forty million, forty thousand, seven hundred thirty-three".