86942449837 has 16 divisors (see below), whose sum is σ = 90712500480. Its totient is φ = 83261404800.

The previous prime is 86942449831. The next prime is 86942449871. The reversal of 86942449837 is 73894424968.

It is a cyclic number.

It is not a de Polignac number, because 86942449837 - 2¹⁹ = 86941925549 is a prime.

It is a super-2 number, since 2×86942449837² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86942449831) 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, 601408 + ... + 731830.

It is an arithmetic number, because the mean of its divisors is an integer number (5669531280).

Almost surely, 2^86942449837 is an apocalyptic number.

It is an amenable number.

86942449837 is a deficient number, since it is larger than the sum of its proper divisors (3770050643).

86942449837 is a wasteful number, since it uses less digits than its factorization.

86942449837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130764.

The product of its digits is 83607552, while the sum is 64.

The spelling of 86942449837 in words is "eighty-six billion, nine hundred forty-two million, four hundred forty-nine thousand, eight hundred thirty-seven".