400165016 has 8 divisors (see below), whose sum is σ = 750309420. Its totient is φ = 200082504.

The previous prime is 400164959. The next prime is 400165021. The reversal of 400165016 is 610561004.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 400164982 and 400165000.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25010306 + ... + 25010321.

Almost surely, 2^400165016 is an apocalyptic number.

It is an amenable number.

400165016 is a deficient number, since it is larger than the sum of its proper divisors (350144404).

400165016 is a wasteful number, since it uses less digits than its factorization.

400165016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50020633 (or 50020629 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 400165016 is about 20004.1249746146. The cubic root of 400165016 is about 736.9076064886.

The spelling of 400165016 in words is "four hundred million, one hundred sixty-five thousand, sixteen".