86898949 has 2 divisors, whose sum is σ = 86898950. Its totient is φ = 86898948.

The previous prime is 86898947. The next prime is 86898971. The reversal of 86898949 is 94989868.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80102500 + 6796449 = 8950^2 + 2607^2 .

It is a cyclic number.

It is not a de Polignac number, because 86898949 - 2¹ = 86898947 is a prime.

Together with 86898947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86898941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43449474 + 43449475.

It is an arithmetic number, because the mean of its divisors is an integer number (43449475).

Almost surely, 2^86898949 is an apocalyptic number.

It is an amenable number.

86898949 is a deficient number, since it is larger than the sum of its proper divisors (1).

86898949 is an equidigital number, since it uses as much as digits as its factorization.

86898949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 61.

The square root of 86898949 is about 9321.9605770460. The cubic root of 86898949 is about 442.9331394627.

The spelling of 86898949 in words is "eighty-six million, eight hundred ninety-eight thousand, nine hundred forty-nine".