400055463 has 8 divisors (see below), whose sum is σ = 592674800. Its totient is φ = 266703624.

The previous prime is 400055437. The next prime is 400055479. The reversal of 400055463 is 364550004.

It is not a de Polignac number, because 400055463 - 2¹⁶ = 399989927 is a prime.

It is a super-2 number, since 2×400055463² = 320088746952288738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14816869 = 400055463 / (4 + 0 + 0 + 0 + 5 + 5 + 4 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400055413) 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 7 ways as a sum of consecutive naturals, for example, 7408408 + ... + 7408461.

It is an arithmetic number, because the mean of its divisors is an integer number (74084350).

Almost surely, 2^400055463 is an apocalyptic number.

400055463 is a deficient number, since it is larger than the sum of its proper divisors (192619337).

400055463 is a wasteful number, since it uses less digits than its factorization.

400055463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14816878 (or 14816872 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 400055463 is about 20001.3865269386. The cubic root of 400055463 is about 736.8403527274.

The spelling of 400055463 in words is "four hundred million, fifty-five thousand, four hundred sixty-three".