86990949 has 32 divisors (see below), whose sum is σ = 136678400. Its totient is φ = 54529200.

The previous prime is 86990947. The next prime is 86990951. The reversal of 86990949 is 94909968.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (86990947) and next prime (86990951).

It is not a de Polignac number, because 86990949 - 2¹ = 86990947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86990895 and 86990904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86990947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76902 + ... + 78024.

It is an arithmetic number, because the mean of its divisors is an integer number (4271200).

Almost surely, 2^86990949 is an apocalyptic number.

It is an amenable number.

86990949 is a deficient number, since it is larger than the sum of its proper divisors (49687451).

86990949 is a wasteful number, since it uses less digits than its factorization.

86990949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 86990949 is about 9326.8938559415. The cubic root of 86990949 is about 443.0893955782.

The spelling of 86990949 in words is "eighty-six million, nine hundred ninety thousand, nine hundred forty-nine".