40897086 has 16 divisors (see below), whose sum is σ = 82220304. Its totient is φ = 13561344.

The previous prime is 40897081. The next prime is 40897093. The reversal of 40897086 is 68079804.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40897081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16501 + ... + 18816.

It is an arithmetic number, because the mean of its divisors is an integer number (5138769).

Almost surely, 2^40897086 is an apocalyptic number.

40897086 is an abundant number, since it is smaller than the sum of its proper divisors (41323218).

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

40897086 is a wasteful number, since it uses less digits than its factorization.

40897086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35515.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 40897086 is about 6395.0829548959. The cubic root of 40897086 is about 344.5329702471.

It can be divided in two parts, 4089 and 7086, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 40897086 in words is "forty million, eight hundred ninety-seven thousand, eighty-six".