86649490 has 8 divisors (see below), whose sum is σ = 155969100. Its totient is φ = 34659792.

The previous prime is 86649461. The next prime is 86649503. The reversal of 86649490 is 9494668.

It can be written as a sum of positive squares in 2 ways, for example, as 86620249 + 29241 = 9307^2 + 171^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 86649490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4332465 + ... + 4332484.

Almost surely, 2^86649490 is an apocalyptic number.

86649490 is a deficient number, since it is larger than the sum of its proper divisors (69319610).

86649490 is a wasteful number, since it uses less digits than its factorization.

86649490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8664956.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 86649490 is about 9308.5707818118. The cubic root of 86649490 is about 442.5088936044.

The spelling of 86649490 in words is "eighty-six million, six hundred forty-nine thousand, four hundred ninety".