86938478 has 8 divisors (see below), whose sum is σ = 142263000. Its totient is φ = 39517480.

The previous prime is 86938469. The next prime is 86938487. The reversal of 86938478 is 87483968.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (86938469) and next prime (86938487).

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1975853 + ... + 1975896.

It is an arithmetic number, because the mean of its divisors is an integer number (17782875).

Almost surely, 2^86938478 is an apocalyptic number.

86938478 is a deficient number, since it is larger than the sum of its proper divisors (55324522).

86938478 is a wasteful number, since it uses less digits than its factorization.

86938478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951762.

The product of its digits is 2322432, while the sum is 53.

The square root of 86938478 is about 9324.0805444827. The cubic root of 86938478 is about 443.0002904471. Note that the first 3 decimals are identical.

Subtracting 86938478 from its reverse (87483968), we obtain a triangular number (545490 = T₁₀₄₄).

It can be divided in two parts, 8693 and 8478, that added together give a palindrome (17171).

The spelling of 86938478 in words is "eighty-six million, nine hundred thirty-eight thousand, four hundred seventy-eight".