86340989 has 16 divisors (see below), whose sum is σ = 101251200. Its totient is φ = 73594080.

The previous prime is 86340979. The next prime is 86341001. The reversal of 86340989 is 98904368.

It is a de Polignac number, because none of the positive numbers 2^k-86340989 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 (86340929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71777 + ... + 72969.

It is an arithmetic number, because the mean of its divisors is an integer number (6328200).

Almost surely, 2^86340989 is an apocalyptic number.

It is an amenable number.

86340989 is a deficient number, since it is larger than the sum of its proper divisors (14910211).

86340989 is a wasteful number, since it uses less digits than its factorization.

86340989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1411 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 86340989 is about 9291.9852023128. The cubic root of 86340989 is about 441.9831095147.

The spelling of 86340989 in words is "eighty-six million, three hundred forty thousand, nine hundred eighty-nine".