86521949 has 8 divisors (see below), whose sum is σ = 87946560. Its totient is φ = 85103200.

The previous prime is 86521937. The next prime is 86521951. The reversal of 86521949 is 94912568.

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

It is a cyclic number.

It is not a de Polignac number, because 86521949 - 2¹² = 86517853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86521909) 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, 35822 + ... + 38160.

It is an arithmetic number, because the mean of its divisors is an integer number (10993320).

Almost surely, 2^86521949 is an apocalyptic number.

It is an amenable number.

86521949 is a deficient number, since it is larger than the sum of its proper divisors (1424611).

86521949 is a wasteful number, since it uses less digits than its factorization.

86521949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its digits is 155520, while the sum is 44.

The square root of 86521949 is about 9301.7175295748. The cubic root of 86521949 is about 442.2916746295.

It can be divided in two parts, 8652 and 1949, that added together give a palindrome (10601).

The spelling of 86521949 in words is "eighty-six million, five hundred twenty-one thousand, nine hundred forty-nine".