87956039 has 2 divisors, whose sum is σ = 87956040. Its totient is φ = 87956038.

The previous prime is 87956023. The next prime is 87956047. The reversal of 87956039 is 93065978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87956039 - 2⁴ = 87956023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87955984 and 87956002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87956069) 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, 43978019 + 43978020.

It is an arithmetic number, because the mean of its divisors is an integer number (43978020).

Almost surely, 2^87956039 is an apocalyptic number.

87956039 is a deficient number, since it is larger than the sum of its proper divisors (1).

87956039 is an equidigital number, since it uses as much as digits as its factorization.

87956039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 87956039 is about 9378.4880977693. The cubic root of 87956039 is about 444.7219388157.

The spelling of 87956039 in words is "eighty-seven million, nine hundred fifty-six thousand, thirty-nine".