40827639 has 12 divisors (see below), whose sum is σ = 54894056. Its totient is φ = 26991648.

The previous prime is 40827629. The next prime is 40827643. The reversal of 40827639 is 93672804.

It is not a de Polignac number, because 40827639 - 2¹³ = 40819447 is a prime.

It is a super-2 number, since 2×40827639² = 3333792212628642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40827597 and 40827606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40827629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66297 + ... + 66909.

Almost surely, 2^40827639 is an apocalyptic number.

40827639 is a deficient number, since it is larger than the sum of its proper divisors (14066417).

40827639 is an equidigital number, since it uses as much as digits as its factorization.

40827639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 40827639 is about 6389.6509294327. The cubic root of 40827639 is about 344.3378435718.

The spelling of 40827639 in words is "forty million, eight hundred twenty-seven thousand, six hundred thirty-nine".