40171086 has 32 divisors (see below), whose sum is σ = 89556480. Its totient is φ = 13347288.

The previous prime is 40171081. The next prime is 40171093. The reversal of 40171086 is 68017104.

It is a happy number.

It is a super-2 number, since 2×40171086² = 3227432300838792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40171081) 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, 18805 + ... + 20831.

It is an arithmetic number, because the mean of its divisors is an integer number (2798640).

Almost surely, 2^40171086 is an apocalyptic number.

40171086 is an abundant number, since it is smaller than the sum of its proper divisors (49385394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40171086 is a wasteful number, since it uses less digits than its factorization.

40171086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 40171086 is about 6338.0664243916. The cubic root of 40171086 is about 342.4820840612.

The spelling of 40171086 in words is "forty million, one hundred seventy-one thousand, eighty-six".