86929540 has 24 divisors (see below), whose sum is σ = 185998680. Its totient is φ = 34115328.

The previous prime is 86929519. The next prime is 86929547. The reversal of 86929540 is 4592968.

It can be written as a sum of positive squares in 4 ways, for example, as 38738176 + 48191364 = 6224^2 + 6942^2 .

It is a super-2 number, since 2×86929540² = 15113489849223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86929547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39945 + ... + 42064.

It is an arithmetic number, because the mean of its divisors is an integer number (7749945).

Almost surely, 2^86929540 is an apocalyptic number.

It is an amenable number.

86929540 is an abundant number, since it is smaller than the sum of its proper divisors (99069140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86929540 is a wasteful number, since it uses less digits than its factorization.

86929540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82071 (or 82069 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 86929540 is about 9323.6012355742. The cubic root of 86929540 is about 442.9851085531.

The spelling of 86929540 in words is "eighty-six million, nine hundred twenty-nine thousand, five hundred forty".