87541939 has 2 divisors, whose sum is σ = 87541940. Its totient is φ = 87541938.

The previous prime is 87541931. The next prime is 87541957. The reversal of 87541939 is 93914578.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87541939 - 2³ = 87541931 is a prime.

It is not a weakly prime, because it can be changed into another prime (87541931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43770969 + 43770970.

It is an arithmetic number, because the mean of its divisors is an integer number (43770970).

Almost surely, 2^87541939 is an apocalyptic number.

87541939 is a deficient number, since it is larger than the sum of its proper divisors (1).

87541939 is an equidigital number, since it uses as much as digits as its factorization.

87541939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 87541939 is about 9356.3849322268. The cubic root of 87541939 is about 444.0229186963.

The spelling of 87541939 in words is "eighty-seven million, five hundred forty-one thousand, nine hundred thirty-nine".