4040023987 has 2 divisors, whose sum is σ = 4040023988. Its totient is φ = 4040023986.

The previous prime is 4040023913. The next prime is 4040023993. The reversal of 4040023987 is 7893200404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4040023987 - 2²³ = 4031635379 is a prime.

It is not a weakly prime, because it can be changed into another prime (4040023087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020011993 + 2020011994.

It is an arithmetic number, because the mean of its divisors is an integer number (2020011994).

Almost surely, 2^4040023987 is an apocalyptic number.

4040023987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040023987 is an equidigital number, since it uses as much as digits as its factorization.

4040023987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 4040023987 is about 63561.1830207714. The cubic root of 4040023987 is about 1592.6780004549.

The spelling of 4040023987 in words is "four billion, forty million, twenty-three thousand, nine hundred eighty-seven".