40092731 has 6 divisors (see below), whose sum is σ = 46638540. Its totient is φ = 34365156.

The previous prime is 40092721. The next prime is 40092763. The reversal of 40092731 is 13729004.

40092731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40092731 - 2⁶ = 40092667 is a prime.

It is a super-3 number, since 3×40092731³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40092731.

It is not an unprimeable number, because it can be changed into a prime (40092721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 409061 + ... + 409158.

It is an arithmetic number, because the mean of its divisors is an integer number (7773090).

Almost surely, 2^40092731 is an apocalyptic number.

40092731 is a deficient number, since it is larger than the sum of its proper divisors (6545809).

40092731 is an equidigital number, since it uses as much as digits as its factorization.

40092731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818233 (or 818226 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40092731 is about 6331.8821056618. The cubic root of 40092731 is about 342.2592650062.

The spelling of 40092731 in words is "forty million, ninety-two thousand, seven hundred thirty-one".