86944939 has 2 divisors, whose sum is σ = 86944940.
Its totient is φ = 86944938.
The previous prime is 86944933. The next prime is 86944943. The reversal of 86944939 is 93944968.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 86944939 - 29 = 86944427 is a prime.
It is not a weakly prime, because it can be changed into another prime (86944933) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43472469 + 43472470.
It is an arithmetic number, because the mean of its divisors is an integer number (43472470).
Almost surely, 286944939 is an apocalyptic number.
86944939 is a deficient number, since it is larger than the sum of its proper divisors (1).
86944939 is an equidigital number, since it uses as much as digits as its factorization.
86944939 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 1679616, while the sum is 52.
The square root of 86944939 is about 9324.4270065243.
The cubic root of 86944939 is about 443.0112643145.
The spelling of 86944939 in words is "eighty-six million, nine hundred forty-four thousand, nine hundred thirty-nine".