40087759 has 2 divisors, whose sum is σ = 40087760. Its totient is φ = 40087758.

The previous prime is 40087721. The next prime is 40087783. The reversal of 40087759 is 95778004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40087759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40081759) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20043879 + 20043880.

It is an arithmetic number, because the mean of its divisors is an integer number (20043880).

Almost surely, 2^40087759 is an apocalyptic number.

40087759 is a deficient number, since it is larger than the sum of its proper divisors (1).

40087759 is an equidigital number, since it uses as much as digits as its factorization.

40087759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 40087759 is about 6331.4894772083. The cubic root of 40087759 is about 342.2451162784.

The spelling of 40087759 in words is "forty million, eighty-seven thousand, seven hundred fifty-nine".