400070012 has 12 divisors (see below), whose sum is σ = 704035080. Its totient is φ = 198917136.

The previous prime is 400070009. The next prime is 400070017. The reversal of 400070012 is 210070004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400070017) 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, 278663 + ... + 280094.

It is an arithmetic number, because the mean of its divisors is an integer number (58669590).

Almost surely, 2^400070012 is an apocalyptic number.

It is an amenable number.

400070012 is a deficient number, since it is larger than the sum of its proper divisors (303965068).

400070012 is a wasteful number, since it uses less digits than its factorization.

400070012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558940 (or 558938 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 400070012 is about 20001.7502234179. The cubic root of 400070012 is about 736.8492849558.

The spelling of 400070012 in words is "four hundred million, seventy thousand, twelve".