86940944 has 10 divisors (see below), whose sum is σ = 168448110. Its totient is φ = 43470464.

The previous prime is 86940937. The next prime is 86940947. The reversal of 86940944 is 44904968.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64963600 + 21977344 = 8060^2 + 4688^2 .

It is a super-2 number, since 2×86940944² = 15117455487222272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86940895 and 86940904.

It is not an unprimeable number, because it can be changed into a prime (86940947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2716889 + ... + 2716920.

It is an arithmetic number, because the mean of its divisors is an integer number (16844811).

Almost surely, 2^86940944 is an apocalyptic number.

It is an amenable number.

86940944 is a deficient number, since it is larger than the sum of its proper divisors (81507166).

86940944 is a wasteful number, since it uses less digits than its factorization.

86940944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5433817 (or 5433811 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 86940944 is about 9324.2127817849. The cubic root of 86940944 is about 443.0044789584.

The spelling of 86940944 in words is "eighty-six million, nine hundred forty thousand, nine hundred forty-four".