86490861247 has 8 divisors (see below), whose sum is σ = 98875519136. Its totient is φ = 74113408512.

The previous prime is 86490861217. The next prime is 86490861253. The reversal of 86490861247 is 74216809468.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86490861247 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 (86490861217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1775538 + ... + 1823599.

It is an arithmetic number, because the mean of its divisors is an integer number (12359439892).

Almost surely, 2^86490861247 is an apocalyptic number.

86490861247 is a deficient number, since it is larger than the sum of its proper divisors (12384657889).

86490861247 is a wasteful number, since it uses less digits than its factorization.

86490861247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602577.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 86490861247 in words is "eighty-six billion, four hundred ninety million, eight hundred sixty-one thousand, two hundred forty-seven".