400125039 has 16 divisors (see below), whose sum is σ = 565304832. Its totient is φ = 250871168.

The previous prime is 400125017. The next prime is 400125041. The reversal of 400125039 is 930521004.

It is a cyclic number.

It is not a de Polignac number, because 400125039 - 2¹¹ = 400122991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400121039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103312 + ... + 107114.

It is an arithmetic number, because the mean of its divisors is an integer number (35331552).

Almost surely, 2^400125039 is an apocalyptic number.

400125039 is a deficient number, since it is larger than the sum of its proper divisors (165179793).

400125039 is a wasteful number, since it uses less digits than its factorization.

400125039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 400125039 is about 20003.1257307452. The cubic root of 400125039 is about 736.8830663320.

The spelling of 400125039 in words is "four hundred million, one hundred twenty-five thousand, thirty-nine".