40529985 has 32 divisors (see below), whose sum is σ = 67342080. Its totient is φ = 20798208.

The previous prime is 40529963. The next prime is 40529999. The reversal of 40529985 is 58992504.

It is not a de Polignac number, because 40529985 - 2⁷ = 40529857 is a prime.

It is a super-3 number, since 3×40529985³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56811 + ... + 57519.

It is an arithmetic number, because the mean of its divisors is an integer number (2104440).

Almost surely, 2^40529985 is an apocalyptic number.

It is an amenable number.

40529985 is a deficient number, since it is larger than the sum of its proper divisors (26812095).

40529985 is a wasteful number, since it uses less digits than its factorization.

40529985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 40529985 is about 6366.3164388836. The cubic root of 40529985 is about 343.4990031096.

It can be divided in two parts, 40529 and 985, that added together give a palindrome (41514).

The spelling of 40529985 in words is "forty million, five hundred twenty-nine thousand, nine hundred eighty-five".