400046515 has 16 divisors (see below), whose sum is σ = 525150720. Its totient is φ = 290135520.

The previous prime is 400046513. The next prime is 400046531. The reversal of 400046515 is 515640004.

It is not a de Polignac number, because 400046515 - 2¹ = 400046513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400046515.

It is not an unprimeable number, because it can be changed into a prime (400046513) 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 15 ways as a sum of consecutive naturals, for example, 10276 + ... + 30094.

It is an arithmetic number, because the mean of its divisors is an integer number (32821920).

Almost surely, 2^400046515 is an apocalyptic number.

400046515 is a deficient number, since it is larger than the sum of its proper divisors (125104205).

400046515 is a wasteful number, since it uses less digits than its factorization.

400046515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 400046515 is about 20001.1628411950. The cubic root of 400046515 is about 736.8348590753.

Adding to 400046515 its reverse (515640004), we get a palindrome (915686519).

The spelling of 400046515 in words is "four hundred million, forty-six thousand, five hundred fifteen".