400516 has 6 divisors (see below), whose sum is σ = 700910. Its totient is φ = 200256.

The previous prime is 400481. The next prime is 400523. The reversal of 400516 is 615004.

400516 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 298116 + 102400 = 546^2 + 320^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50061 + ... + 50068.

2⁴⁰⁰⁵¹⁶ is an apocalyptic number.

It is an amenable number.

400516 is a deficient number, since it is larger than the sum of its proper divisors (300394).

400516 is a wasteful number, since it uses less digits than its factorization.

400516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100133 (or 100131 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 400516 is about 632.8633343780. The cubic root of 400516 is about 73.7122990299.

The spelling of 400516 in words is "four hundred thousand, five hundred sixteen".