86944901 has 4 divisors (see below), whose sum is σ = 87921900. Its totient is φ = 85967904.

The previous prime is 86944861. The next prime is 86944909. The reversal of 86944901 is 10944968.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5764801 + 81180100 = 2401^2 + 9010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86944901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86944909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488366 + ... + 488543.

It is an arithmetic number, because the mean of its divisors is an integer number (21980475).

Almost surely, 2^86944901 is an apocalyptic number.

It is an amenable number.

86944901 is a deficient number, since it is larger than the sum of its proper divisors (976999).

86944901 is an equidigital number, since it uses as much as digits as its factorization.

86944901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976998.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 86944901 is about 9324.4249688654. The cubic root of 86944901 is about 443.0111997739.

The spelling of 86944901 in words is "eighty-six million, nine hundred forty-four thousand, nine hundred one".