40004029 has 8 divisors (see below), whose sum is σ = 43894872. Its totient is φ = 36229440.

The previous prime is 40004023. The next prime is 40004039. The reversal of 40004029 is 92040004.

It can be written as a sum of positive squares in 4 ways, for example, as 1004004 + 39000025 = 1002^2 + 6245^2 .

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

It is not a de Polignac number, because 40004029 - 2¹¹ = 40001981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40003997 and 40004015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28342 + ... + 29719.

It is an arithmetic number, because the mean of its divisors is an integer number (5486859).

Almost surely, 2^40004029 is an apocalyptic number.

It is an amenable number.

40004029 is a deficient number, since it is larger than the sum of its proper divisors (3890843).

40004029 is a wasteful number, since it uses less digits than its factorization.

40004029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58127.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 40004029 is about 6324.8738327337. The cubic root of 40004029 is about 342.0066714383.

The spelling of 40004029 in words is "forty million, four thousand, twenty-nine".