86920989 has 8 divisors (see below), whose sum is σ = 116779872. Its totient is φ = 57504720.

The previous prime is 86920987. The next prime is 86921041. The reversal of 86920989 is 98902968.

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

It is not a de Polignac number, because 86920989 - 2¹ = 86920987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86920987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110194 + ... + 110979.

It is an arithmetic number, because the mean of its divisors is an integer number (14597484).

Almost surely, 2^86920989 is an apocalyptic number.

It is an amenable number.

86920989 is a deficient number, since it is larger than the sum of its proper divisors (29858883).

86920989 is a wasteful number, since it uses less digits than its factorization.

86920989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221307.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 86920989 is about 9323.1426568513. The cubic root of 86920989 is about 442.9705830348.

The spelling of 86920989 in words is "eighty-six million, nine hundred twenty thousand, nine hundred eighty-nine".