40139533 has 32 divisors (see below), whose sum is σ = 52496640. Its totient is φ = 29859840.

The previous prime is 40139527. The next prime is 40139563. The reversal of 40139533 is 33593104.

40139533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40139533 - 2⁵ = 40139501 is a prime.

It is a super-2 number, since 2×40139533² = 3222364218916178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40139503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92485 + ... + 92917.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520).

Almost surely, 2^40139533 is an apocalyptic number.

It is an amenable number.

40139533 is a deficient number, since it is larger than the sum of its proper divisors (12357107).

40139533 is a wasteful number, since it uses less digits than its factorization.

40139533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 40139533 is about 6335.5767693242. The cubic root of 40139533 is about 342.3923912925.

The spelling of 40139533 in words is "forty million, one hundred thirty-nine thousand, five hundred thirty-three".