40488731 has 2 divisors, whose sum is σ = 40488732. Its totient is φ = 40488730.

The previous prime is 40488719. The next prime is 40488797. The reversal of 40488731 is 13788404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40488731 - 2¹⁴ = 40472347 is a prime.

It is a super-2 number, since 2×40488731² = 3278674675980722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40488691 and 40488700.

It is not a weakly prime, because it can be changed into another prime (40488631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20244365 + 20244366.

It is an arithmetic number, because the mean of its divisors is an integer number (20244366).

Almost surely, 2^40488731 is an apocalyptic number.

40488731 is a deficient number, since it is larger than the sum of its proper divisors (1).

40488731 is an equidigital number, since it uses as much as digits as its factorization.

40488731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 40488731 is about 6363.0755928246. The cubic root of 40488731 is about 343.3824184909.

The spelling of 40488731 in words is "forty million, four hundred eighty-eight thousand, seven hundred thirty-one".