400002463 has 4 divisors (see below), whose sum is σ = 457145680. Its totient is φ = 342859248.

The previous prime is 400002461. The next prime is 400002509. The reversal of 400002463 is 364200004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400002463 - 2¹ = 400002461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400002463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400002461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28571598 + ... + 28571611.

It is an arithmetic number, because the mean of its divisors is an integer number (114286420).

Almost surely, 2^400002463 is an apocalyptic number.

400002463 is a deficient number, since it is larger than the sum of its proper divisors (57143217).

400002463 is an equidigital number, since it uses as much as digits as its factorization.

400002463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57143216.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 400002463 is about 20000.0615749052. The cubic root of 400002463 is about 736.8078120199.

Adding to 400002463 its reverse (364200004), we get a palindrome (764202467).

The spelling of 400002463 in words is "four hundred million, two thousand, four hundred sixty-three".