86247949 has 4 divisors (see below), whose sum is σ = 86270940. Its totient is φ = 86224960.

The previous prime is 86247947. The next prime is 86247991. The reversal of 86247949 is 94974268.

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 54686025 + 31561924 = 7395^2 + 5618^2 .

It is a cyclic number.

It is not a de Polignac number, because 86247949 - 2¹ = 86247947 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 (86247947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4414 + ... + 13855.

It is an arithmetic number, because the mean of its divisors is an integer number (21567735).

Almost surely, 2^86247949 is an apocalyptic number.

It is an amenable number.

86247949 is a deficient number, since it is larger than the sum of its proper divisors (22991).

86247949 is a wasteful number, since it uses less digits than its factorization.

86247949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22990.

The product of its digits is 870912, while the sum is 49.

The square root of 86247949 is about 9286.9773877188. The cubic root of 86247949 is about 441.8242939134.

The spelling of 86247949 in words is "eighty-six million, two hundred forty-seven thousand, nine hundred forty-nine".