86071838 has 4 divisors (see below), whose sum is σ = 129107760. Its totient is φ = 43035918.

The previous prime is 86071801. The next prime is 86071859. The reversal of 86071838 is 83817068.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×86071838² = 14816722593396488, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86071795 and 86071804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21517958 + ... + 21517961.

It is an arithmetic number, because the mean of its divisors is an integer number (32276940).

Almost surely, 2^86071838 is an apocalyptic number.

86071838 is a deficient number, since it is larger than the sum of its proper divisors (43035922).

86071838 is a wasteful number, since it uses less digits than its factorization.

86071838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43035921.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 86071838 is about 9277.4909323588. The cubic root of 86071838 is about 441.5233664137.

The spelling of 86071838 in words is "eighty-six million, seventy-one thousand, eight hundred thirty-eight".