40040829 has 12 divisors (see below), whose sum is σ = 57911100. Its totient is φ = 26659584.

The previous prime is 40040813. The next prime is 40040839. The reversal of 40040829 is 92804004.

It can be written as a sum of positive squares in 2 ways, for example, as 1625625 + 38415204 = 1275^2 + 6198^2 .

It is not a de Polignac number, because 40040829 - 2⁴ = 40040813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5967 + ... + 10755.

It is an arithmetic number, because the mean of its divisors is an integer number (4825925).

Almost surely, 2^40040829 is an apocalyptic number.

It is an amenable number.

40040829 is a deficient number, since it is larger than the sum of its proper divisors (17870271).

40040829 is a wasteful number, since it uses less digits than its factorization.

40040829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724 (or 5721 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 40040829 is about 6327.7823129435. The cubic root of 40040829 is about 342.1115107801. Note that the first 3 decimals are identical.

The spelling of 40040829 in words is "forty million, forty thousand, eight hundred twenty-nine".