86449990 has 32 divisors (see below), whose sum is σ = 170535456. Its totient is φ = 31292160.

The previous prime is 86449969. The next prime is 86449997. The reversal of 86449990 is 9994468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86449997) 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, 23944 + ... + 27316.

It is an arithmetic number, because the mean of its divisors is an integer number (5329233).

Almost surely, 2^86449990 is an apocalyptic number.

86449990 is a deficient number, since it is larger than the sum of its proper divisors (84085466).

86449990 is a wasteful number, since it uses less digits than its factorization.

86449990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 86449990 is about 9297.8486759035. The cubic root of 86449990 is about 442.1690248496.

The spelling of 86449990 in words is "eighty-six million, four hundred forty-nine thousand, nine hundred ninety".