40204029 has 4 divisors (see below), whose sum is σ = 53605376. Its totient is φ = 26802684.

The previous prime is 40204027. The next prime is 40204033. The reversal of 40204029 is 92040204.

40204029 = 1486² + 1487² + ... + 1503².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40204029 - 2¹ = 40204027 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40203996 and 40204014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40204027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6700669 + ... + 6700674.

It is an arithmetic number, because the mean of its divisors is an integer number (13401344).

Almost surely, 2^40204029 is an apocalyptic number.

It is an amenable number.

40204029 is a deficient number, since it is larger than the sum of its proper divisors (13401347).

40204029 is a wasteful number, since it uses less digits than its factorization.

40204029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13401346.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40204029 is about 6340.6647127884. The cubic root of 40204029 is about 342.5756779510.

The spelling of 40204029 in words is "forty million, two hundred four thousand, twenty-nine".