400620412 has 12 divisors (see below), whose sum is σ = 707638680. Its totient is φ = 198437936.

The previous prime is 400620397. The next prime is 400620431. The reversal of 400620412 is 214026004.

It is a super-2 number, since 2×400620412² = 320993429022099488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400620412.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 467587 + ... + 468442.

It is an arithmetic number, because the mean of its divisors is an integer number (58969890).

Almost surely, 2^400620412 is an apocalyptic number.

It is an amenable number.

400620412 is a deficient number, since it is larger than the sum of its proper divisors (307018268).

400620412 is a wasteful number, since it uses less digits than its factorization.

400620412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936140 (or 936138 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 400620412 is about 20015.5042904245. The cubic root of 400620412 is about 737.1870391748.

Adding to 400620412 its reverse (214026004), we get a palindrome (614646416).

The spelling of 400620412 in words is "four hundred million, six hundred twenty thousand, four hundred twelve".