400041029 has 4 divisors (see below), whose sum is σ = 421095840. Its totient is φ = 378986220.

The previous prime is 400041023. The next prime is 400041041. The reversal of 400041029 is 920140004.

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 a cyclic number.

It is not a de Polignac number, because 400041029 - 2⁴ = 400041013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400041029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400041023) 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 3 ways as a sum of consecutive naturals, for example, 10527377 + ... + 10527414.

It is an arithmetic number, because the mean of its divisors is an integer number (105273960).

Almost surely, 2^400041029 is an apocalyptic number.

It is an amenable number.

400041029 is a deficient number, since it is larger than the sum of its proper divisors (21054811).

400041029 is a wasteful number, since it uses less digits than its factorization.

400041029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21054810.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 400041029 is about 20001.0256986986. The cubic root of 400041029 is about 736.8314908882.

The spelling of 400041029 in words is "four hundred million, forty-one thousand, twenty-nine".