86939242 has 8 divisors (see below), whose sum is σ = 140440356. Its totient is φ = 40125792.

The previous prime is 86939227. The next prime is 86939243. The reversal of 86939242 is 24293968.

It can be written as a sum of positive squares in 2 ways, for example, as 86843761 + 95481 = 9319^2 + 309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (86939243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671883 + ... + 1671934.

Almost surely, 2^86939242 is an apocalyptic number.

86939242 is a deficient number, since it is larger than the sum of its proper divisors (53501114).

86939242 is a wasteful number, since it uses less digits than its factorization.

86939242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343832.

The product of its digits is 186624, while the sum is 43.

The square root of 86939242 is about 9324.1215135797. The cubic root of 86939242 is about 443.0015881128.

The spelling of 86939242 in words is "eighty-six million, nine hundred thirty-nine thousand, two hundred forty-two".