40139339 has 8 divisors (see below), whose sum is σ = 42184560. Its totient is φ = 38144736.

The previous prime is 40139321. The next prime is 40139357. The reversal of 40139339 is 93393104.

40139339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40139321) and next prime (40139357).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40139339 - 2⁸ = 40139083 is a prime.

It is a super-2 number, since 2×40139339² = 3222333070713842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40139639) 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 7 ways as a sum of consecutive naturals, for example, 11024 + ... + 14205.

It is an arithmetic number, because the mean of its divisors is an integer number (5273070).

Almost surely, 2^40139339 is an apocalyptic number.

40139339 is a deficient number, since it is larger than the sum of its proper divisors (2045221).

40139339 is a wasteful number, since it uses less digits than its factorization.

40139339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25309.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 40139339 is about 6335.5614589395. The cubic root of 40139339 is about 342.3918396815.

The spelling of 40139339 in words is "forty million, one hundred thirty-nine thousand, three hundred thirty-nine".